Do not start the test until instructed to do so!

Size: px
Start display at page:

Download "Do not start the test until instructed to do so!"

Transcription

1 Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices may be used. The use of any such device will be interpreted as an indication that you are finished with the test and your test form will be collected immediately. Answer each question in the space provided. If you need to continue an answer onto the back of a page, clearly indicate that and label the continuation with the question number. If you want partial credit, justify your answers, even when justification is not explicitly required. There are 5 questions, some with multiple parts, priced as marked. The maximum score is 100. When you have completed the test, sign the pledge at the bottom of this page and turn in the test. If you brought a fact sheet to the test, write your name on it and turn it in with the test. Note that either failing to return this test, or discussing its content with a student who has not taken it is a violation of the Honor Code. Do not start the test until instructed to do so! Name printed Pledge: On my honor, I have neither given nor received unauthorized aid on this examination. signed B 1

2 xkcd.com B 2

3 1. [20 points] Implement the C function described below. Be sure to note the restrictions if any, violating the restrictions will result in a very low score. Reverses the ordering of the bits, in every byte, in a bytes_t type. Pre: bytes - Points to a valid bytes_t variable and is not NULL. Post: Every bit in each byte in bytes_data(bytes) has been reversed. Examples: If bytes_data(bytes) contains 0xde the result would be 0x7b. 0xde = , reversed would be , or 0x7b. If bytes_data(bytes) contains 0xde, 0xad the result would be 0x7b, 0xb5. Building on the last example, 0xad = , reversed would , or 0xb5. You may use any function from your bytes_t type (or none). void bytes_reverse_bits(bytes_t * const bytes) uint8_t reverse[] = 0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6, 0xe, 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf; uint8_t * data = bytes_data(bytes); for (size_t b = 0; b < bytes->usage; b++) uint8_t lo = data[b] & 0xf; uint8_t hi = (data[b] >> 4); data[b] = (reverse[lo] << 4) reverse[hi]; void bytes_reverse_bits(bytes_t * const bytes) uint8_t * data = bytes_data(bytes); for (size_t b = 0; b < bytes->usage; b++) uint8_t new = 0; uint8_t old = data[b]; for (uint8_t bit = 0; bit < 8; bit++) new = (new << 1) + (old % 2); old /= 2; data[b] = new; B 3

4 2. [20 points] Implement the C function described below. Be sure to note the restrictions and pre and post conditions, failure to meet these conditions will result in a low score. /* Humans normally view IP addresses in what's called dot-decimal notation (e.g. * ) but the address is often stored as 32 bit integer. Each number * in dot-decimal format represents an octet (or byte) in the 32 bit integer. * This function converts from dot-decimal format (string) to binary (uint32_t). * You may assume each number in the IP address >= 0. * * Pre: ip_addr - Points to a properly formatted C string, containing a valid * IP address. * result Points to a potentially uninitialized uint32_t. * * Post: The octets in ip_addr have been converted from their string * representation to integers and stored in the uint32_t, *result. * * Examples: * result contains 0xC0A80101, 0xC0 is 192, 0xA8 is 168, 0x01 is 1. * ip_to_int(" ", &result); * result contains 0x7F000001, 0x7F is 127, 0x00 is 0, and 0x01 is 1. * ip_to_int(" ", &result); * * Restrictions: * - You may NOT use other I/O, e.g. any printf() or scanf() variants. * - You may NOT make any use of character/string variables or arrays * besides the parameter (ip_addr). * - You may NOT use math.h or string.h, nor any function declared within. * - You may NOT use array brackets, all data access must use pointer syntax. * - You may NOT use any additional libraries. * - You may NOT use recursion. */ void ip_to_int(const char * ip_addr, uint32_t * const result) uint8_t octet = 0; uint8_t tens = 1; uint8_t shift = 0; const char *tmp = ip_addr; while (*tmp) tmp++; *result = 0; while (--tmp >= ip_addr) while ((*tmp!= '.') && (tmp >= ip_addr)) octet += (*tmp - 48) * tens; tens *= 10; tmp--; *result = (((uint32_t) octet) << shift); octet = 0; shift += 8; tens = 1; B 4

5 3. [12 points] Write a solution for the function below and explain the logic that makes it work. The explanation will be worth more than the solution. You may not use any loops (while, for, do-while), selections (if, switch), or casts, and you may not write any constants that are more than one byte wide. Don t worry about the number of operations. replacebyte(x, n, c) - Replace byte n in x with c Bytes numbered from 0 (LSB) to 3 (MSB) Example: replacebyte(0x ,1,0xab) = 0x1234ab78 You may assume 0 <= n <= 3 and 0 <= c <= 255 Legal ops:! ~ & ^ + - << >> int replacebyte(int x, int n, int c) int mask = ~(0xff << (n << 3)); int shift = c << (n << 3); return (x & mask) shift; B 5

6 4. [18 points] Write a solution for the function below and explain the logic that makes it work. The explanation will be worth more than the solution. You may not use any loops (while, for, do-while), selections (if, switch), or casts, and you may not write any constants that are more than one byte wide. Don t worry about the number of operations. is_between(x, lo, hi) - returns a non-zero value (true) if lo <= x <= hi, and 0 (false) otherwise Precondition: lo <= hi Examples: is_between(5, 5, 10) = true is_between(10, 5, 10) = true is_between(0, 5, 10) = false Legal ops:! ~ & ^ + - << >> int is_between(int x, int lo, int hi) Not worrying about overflow: lo = lo + ~0; return ((lo - x) >> 31) & ~((hi - x) >> 31); B 6

7 5. Consider the following C function: void mystery(char * input) char *leader, *trailer; leader = trailer = input; while (*trailer) uint64_t tmp = 0x0; uint64_t mask = 0x0; uint8_t * tmp_ptr = (uint8_t *) &tmp; uint8_t * mask_ptr = (uint8_t *) &mask; while((*leader) && (leader - trailer < sizeof(uint64_t))) You may assume char is signed type. char byte = *tmp_ptr++ = *leader++; a if(((0x40 - byte) >> 7) & ~((0x5A - byte) >> 7)) *mask_ptr++ = 0x20; c else *mask_ptr++ = 0x00; tmp = mask ^ tmp; memcpy(trailer, &tmp, leader - trailer); d b trailer = leader; For the questions below, assume the function has been called with input "TestF16!", i.e. mystery("testf16!"). a. [6 points] This function modifies tmp using tmp_ptr. Given the input above, what will tmp contain immediately after the inner while loop finishes (right before d)? Write the answer in big endian order, byte-by-byte and left to right. Be specific, vague answers will receive no credit. 'T' 'e' 's' 't' 'F' '1' '6' '!' 0x54 0x65 0x73 0x74 0x46 0x31 0x36 0x21 B 7

8 b. [6 points] In plain English, explain what the bitwise operations used in the if statement condition accomplish. This should not be a reiteration of the bitwise operations, and should be specific, e.g. these operations determine the remainder when performing an integer division. Tests if the character is an uppercase letter. If the character is an uppercase letter, 0x20 is added to the mask, otherwise 0x00. c. [6 points] This function also modifies mask using mask_ptr. Given the input above, what will mask contain immediately after the inner while loop finishes (right before d)? Write the answer in big endian order, byte-by-byte and left to right. Be specific, vague answers will receive no credit. 'T' 'e' 's' 't' 'F' '1' '6' '!' 0x20 0x00 0x00 0x00 0x20 0x00 0x00 0x00 d. [6 points] Given the values of tmp and mask from your answers in parts a and c, what is the result of mask ^ tmp? Write the answer in big endian order, byte-by-byte and left to right. Be specific, vague answers will receive no credit. ^ 0x54 0x65 0x73 0x74 0x46 0x31 0x36 0x21 0x20 0x00 0x00 0x00 0x20 0x00 0x00 0x00 0x74 0x65 0x53 0x54 0x66 0x31 0x36 0x21 't' 'e' 's' 't' 'f' '1' '6' '!' e. [6 points] In plain English, explain what the function mystery() accomplishes. This should not be a reiteration of each line or the bitwise operations, and should be specific, e.g. this function sums the numbers from Converts the uppercase letters to lowercase letters, leaving the other characters alone. B 8

9 The ASCII Table A B C D E F 0 NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF CR SO SI 1 DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM SUB ESC FS GS RS US 2 SP! " # $ % & ' ( ) * +, -. / : ; < = >? A B C D E F G H I J K L M N O 5 P Q R S T U V W X Y Z [ \ ] ^ _ 6 ` a b c d e f g h i j k l m n o 7 p q r s t u v w x y z ~ DEL Scratch Space Can be used as extra space or scratch space for any question. B 9

Do not start the test until instructed to do so!

Do not start the test until instructed to do so! Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

Do not start the test until instructed to do so!

Do not start the test until instructed to do so! Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

Do not start the test until instructed to do so!

Do not start the test until instructed to do so! Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON

CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON Prof. Gurindar Sohi TAs: Pradip Vallathol and Junaid Khalid Midterm Examination 1 In Class (50 minutes) Friday, September

More information

CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON

CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON CS/ECE 252: INTRODUCTION TO COMPUTER ENGINEERING UNIVERSITY OF WISCONSIN MADISON Prof. Gurindar Sohi TAs: Junaid Khalid and Pradip Vallathol Midterm Examination 1 In Class (50 minutes) Friday, September

More information

1.1. INTRODUCTION 1.2. NUMBER SYSTEMS

1.1. INTRODUCTION 1.2. NUMBER SYSTEMS Chapter 1. 1.1. INTRODUCTION Digital computers have brought about the information age that we live in today. Computers are important tools because they can locate and process enormous amounts of information

More information

Data Representation and Binary Arithmetic. Lecture 2

Data Representation and Binary Arithmetic. Lecture 2 Data Representation and Binary Arithmetic Lecture 2 Computer Data Data is stored as binary; 0 s and 1 s Because two-state ( 0 & 1 ) logic elements can be manufactured easily Bit: binary digit (smallest

More information

Chapter 2 Number System

Chapter 2 Number System Chapter 2 Number System Embedded Systems with ARM Cortext-M Updated: Tuesday, January 16, 2018 What you should know.. Before coming to this class Decimal Binary Octal Hex 0 0000 00 0x0 1 0001 01 0x1 2

More information

Chapter 2 Bits, Data Types, and Operations

Chapter 2 Bits, Data Types, and Operations Chapter Bits, Data Types, and Operations How do we represent data in a computer? At the lowest level, a computer is an electronic machine. works by controlling the flow of electrons Easy to recognize two

More information

Bits and Bytes. Data Representation. A binary digit or bit has a value of either 0 or 1; these are the values we can store in hardware devices.

Bits and Bytes. Data Representation. A binary digit or bit has a value of either 0 or 1; these are the values we can store in hardware devices. Bits and Bytes 1 A binary digit or bit has a value of either 0 or 1; these are the values we can store in hardware devices. A byte is a sequence of 8 bits. A byte is also the fundamental unit of storage

More information

Chapter 2 Bits, Data Types, and Operations

Chapter 2 Bits, Data Types, and Operations Chapter 2 Bits, Data Types, and Operations How do we represent data in a computer? At the lowest level, a computer is an electronic machine. works by controlling the flow of electrons Easy to recognize

More information

Number Systems for Computers. Outline of Introduction. Binary, Octal and Hexadecimal numbers. Issues for Binary Representation of Numbers

Number Systems for Computers. Outline of Introduction. Binary, Octal and Hexadecimal numbers. Issues for Binary Representation of Numbers Outline of Introduction Administrivia What is computer architecture? What do computers do? Representing high level things in binary Data objects: integers, decimals, characters, etc. Memory locations (We

More information

Number Representations

Number Representations Simple Arithmetic [Arithm Notes] Number representations Signed numbers Sign-magnitude, ones and twos complement Arithmetic Addition, subtraction, negation, overflow MIPS instructions Logic operations MIPS

More information

Chapter 2 Bits, Data Types, and Operations

Chapter 2 Bits, Data Types, and Operations Chapter 2 Bits, Data Types, and Operations Original slides from Gregory Byrd, North Carolina State University Modified slides by Chris Wilcox, Colorado State University How do we represent data in a computer?!

More information

Chapter 8. Characters and Strings

Chapter 8. Characters and Strings Chapter 8 Characters and s OJECTIVES After you have read and studied this chapter, you should be able to Declare and manipulate data of the char data type. Write string processing programs using and uffer

More information

CPS 104 Computer Organization and Programming Lecture-2 : Data representations,

CPS 104 Computer Organization and Programming Lecture-2 : Data representations, CPS 104 Computer Organization and Programming Lecture-2 : Data representations, Sep. 1, 1999 Dietolf Ramm http://www.cs.duke.edu/~dr/cps104.html CPS104 Lec2.1 GK&DR Fall 1999 Data Representation Computers

More information

ASSIGNMENT 5 TIPS AND TRICKS

ASSIGNMENT 5 TIPS AND TRICKS ASSIGNMENT 5 TIPS AND TRICKS linear-feedback shift registers Java implementation a simple encryption scheme http://princeton.edu/~cos26 Last updated on /26/7 : PM Goals OOP: implement a data type; write

More information

Exercises Software Development I. 03 Data Representation. Data types, range of values, internal format, literals. October 22nd, 2014

Exercises Software Development I. 03 Data Representation. Data types, range of values, internal format, literals. October 22nd, 2014 Exercises Software Development I 03 Data Representation Data types, range of values, ernal format, literals October 22nd, 2014 Software Development I Wer term 2013/2014 Priv.-Doz. Dipl.-Ing. Dr. Andreas

More information

CS 2505 Computer Organization I Test 1. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 1. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. This examination is closed book and closed

More information

Fundamentals of Programming (C)

Fundamentals of Programming (C) Borrowed from lecturer notes by Omid Jafarinezhad Fundamentals of Programming (C) Group 8 Lecturer: Vahid Khodabakhshi Lecture Number Systems Department of Computer Engineering Outline Numeral Systems

More information

Chapter 2 Bits, Data Types, and Operations

Chapter 2 Bits, Data Types, and Operations Chapter 2 Bits, Data Types, and Operations Original slides from Gregory Byrd, North Carolina State University Modified by Chris Wilcox, S. Rajopadhye Colorado State University How do we represent data

More information

Numbers and Computers. Debdeep Mukhopadhyay Assistant Professor Dept of Computer Sc and Engg IIT Madras

Numbers and Computers. Debdeep Mukhopadhyay Assistant Professor Dept of Computer Sc and Engg IIT Madras Numbers and Computers Debdeep Mukhopadhyay Assistant Professor Dept of Computer Sc and Engg IIT Madras 1 Think of a number between 1 and 15 8 9 10 11 12 13 14 15 4 5 6 7 12 13 14 15 2 3 6 7 10 11 14 15

More information

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

RS-232 Control of the Advantage EQ281/8, EQ282/8 and Advantage SMS200

RS-232 Control of the Advantage EQ281/8, EQ282/8 and Advantage SMS200 RS-232 Control of the Advantage EQ281/8, EQ282/8 and Advantage SMS200 Biamp Systems, 14130 N.W. Science Park, Portland, Oregon 97229 U.S.A. (503) 641-7287 an affiliate of Rauland-Borg Corp. Introduction

More information

Unit 3, Lesson 2 Data Types, Arithmetic,Variables, Input, Constants, & Library Functions. Mr. Dave Clausen La Cañada High School

Unit 3, Lesson 2 Data Types, Arithmetic,Variables, Input, Constants, & Library Functions. Mr. Dave Clausen La Cañada High School Unit 3, Lesson 2 Data Types, Arithmetic,Variables, Input, Constants, & Library Functions Mr. Dave Clausen La Cañada High School Vocabulary Variable- A variable holds data that can change while the program

More information

CS341 *** TURN OFF ALL CELLPHONES *** Practice NAME

CS341 *** TURN OFF ALL CELLPHONES *** Practice NAME CS341 *** TURN OFF ALL CELLPHONES *** Practice Final Exam B. Wilson NAME OPEN BOOK / OPEN NOTES: I GIVE PARTIAL CREDIT! SHOW ALL WORK! 1. Processor Architecture (20 points) a. In a Harvard architecture

More information

Fundamental Data Types

Fundamental Data Types Fundamental Data Types Lecture 4 Sections 2.7-2.10 Robb T. Koether Hampden-Sydney College Mon, Sep 3, 2018 Robb T. Koether (Hampden-Sydney College) Fundamental Data Types Mon, Sep 3, 2018 1 / 25 1 Integers

More information

Binary Numbers. The Basics. Base 10 Number. What is a Number? = Binary Number Example. Binary Number Example

Binary Numbers. The Basics. Base 10 Number. What is a Number? = Binary Number Example. Binary Number Example The Basics Binary Numbers Part Bit of This and a Bit of That What is a Number? Base Number We use the Hindu-Arabic Number System positional grouping system each position represents a power of Binary numbers

More information

Under the Hood: Data Representation. Computer Science 104 Lecture 2

Under the Hood: Data Representation. Computer Science 104 Lecture 2 Under the Hood: Data Representation Computer Science 104 Lecture 2 Admin Piazza, Sakai Up Everyone should have access Homework 1 Posted Due Feb 6 PDF or Plain Text Only: No Word or RTF Recommended: Learn

More information

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page fact sheet. Your fact sheet may contain definitions and examples,

More information

Data Representa5on. CSC 2400: Computer Systems. What kinds of data do we need to represent?

Data Representa5on. CSC 2400: Computer Systems. What kinds of data do we need to represent? CSC 2400: Computer Systems Data Representa5on What kinds of data do we need to represent? - Numbers signed, unsigned, integers, floating point, complex, rational, irrational, - Text characters, strings,

More information

Data Representa5on. CSC 2400: Computer Systems. What kinds of data do we need to represent?

Data Representa5on. CSC 2400: Computer Systems. What kinds of data do we need to represent? CSC 2400: Computer Systems Data Representa5on What kinds of data do we need to represent? - Numbers signed, unsigned, integers, floating point, complex, rational, irrational, - Text characters, strings,

More information

Fundamentals of Programming

Fundamentals of Programming Fundamentals of Programming Lecture 2 Number Systems & Arithmetic Lecturer : Ebrahim Jahandar Some Parts borrowed from slides by IETC1011-Yourk University Common Number Systems System Base Symbols Used

More information

Midterm CSE 131 Winter 2012

Midterm CSE 131 Winter 2012 Login Name Signature _ Name Student ID Midterm CSE 131 Winter 2012 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 (22 points) (29 points) (25 points) (34 points) (20 points) (18 points) Subtotal (148 points

More information

Introduction to Decision Structures. Boolean & If Statements. Different Types of Decisions. Boolean Logic. Relational Operators

Introduction to Decision Structures. Boolean & If Statements. Different Types of Decisions. Boolean Logic. Relational Operators Boolean & If Statements Introduction to Decision Structures Chapter 4 Fall 2015, CSUS Chapter 4.1 Introduction to Decision Structures Different Types of Decisions A decision structure allows a program

More information

Chapter 2 Bits, Data Types, and Operations

Chapter 2 Bits, Data Types, and Operations Chapter 2 Bits, Data Types, and Operations Computer is a binary digital system. Digital system: finite number of symbols Binary (base two) system: has two states: 0 and 1 Basic unit of information is the

More information

Chapter 3. Information Representation

Chapter 3. Information Representation Chapter 3 Information Representation Instruction Set Architecture APPLICATION LEVEL HIGH-ORDER LANGUAGE LEVEL ASSEMBLY LEVEL OPERATING SYSTEM LEVEL INSTRUCTION SET ARCHITECTURE LEVEL 3 MICROCODE LEVEL

More information

Lecture 10 Arrays (2) and Strings. UniMAP SEM II - 11/12 DKT121 1

Lecture 10 Arrays (2) and Strings. UniMAP SEM II - 11/12 DKT121 1 Lecture 10 Arrays (2) and Strings UniMAP SEM II - 11/12 DKT121 1 Outline 8.1 Passing Arrays to Function 8.2 Displaying Array in a Function 8.3 How Arrays are passed in a function call 8.4 Introduction

More information

plc numbers Encoded values; BCD and ASCII Error detection; parity, gray code and checksums

plc numbers Encoded values; BCD and ASCII Error detection; parity, gray code and checksums plc numbers - 3. 3. NUMBERS AND DATA Topics: Number bases; binary, octal,, hexa Binary calculations; s compliments, addition, subtraction and Boolean operations Encoded values; BCD and ASCII Error detection;

More information

CSE-1520R Test #1. The exam is closed book, closed notes, and no aids such as calculators, cellphones, etc.

CSE-1520R Test #1. The exam is closed book, closed notes, and no aids such as calculators, cellphones, etc. 9 February 2011 CSE-1520R Test #1 [B4] p. 1 of 8 CSE-1520R Test #1 Sur / Last Name: Given / First Name: Student ID: Instructor: Parke Godfrey Exam Duration: 45 minutes Term: Winter 2011 The exam is closed

More information

CSE 30 Winter 2014 Final Exam

CSE 30 Winter 2014 Final Exam Signature Login: cs30x Name Student ID By filling in the above and signing my name, I confirm I will complete this exam with the utmost integrity and in accordance with the Policy on Integrity of Scholarship.

More information

CSE 30 Fall 2013 Final Exam

CSE 30 Fall 2013 Final Exam Login: cs30x Student ID Name Signature By filling in the above and signing my name, I confirm I will complete this exam with the utmost integrity and in accordance with the Policy on Integrity of Scholarship.

More information

Positional Number System

Positional Number System Positional Number System A number is represented by a string of digits where each digit position has an associated weight. The weight is based on the radix of the number system. Some common radices: Decimal.

More information

DATA REPRESENTATION. Data Types. Complements. Fixed Point Representations. Floating Point Representations. Other Binary Codes. Error Detection Codes

DATA REPRESENTATION. Data Types. Complements. Fixed Point Representations. Floating Point Representations. Other Binary Codes. Error Detection Codes 1 DATA REPRESENTATION Data Types Complements Fixed Point Representations Floating Point Representations Other Binary Codes Error Detection Codes 2 Data Types DATA REPRESENTATION Information that a Computer

More information

CSE-1520R Test #1. The exam is closed book, closed notes, and no aids such as calculators, cellphones, etc.

CSE-1520R Test #1. The exam is closed book, closed notes, and no aids such as calculators, cellphones, etc. 9 February 2011 CSE-1520R Test #1 [7F] w/ answers p. 1 of 8 CSE-1520R Test #1 Sur / Last Name: Given / First Name: Student ID: Instructor: Parke Godfrey Exam Duration: 45 minutes Term: Winter 2011 The

More information

EE 109 Unit 3. Analog vs. Digital. Analog vs. Digital. Binary Representation Systems ANALOG VS. DIGITAL

EE 109 Unit 3. Analog vs. Digital. Analog vs. Digital. Binary Representation Systems ANALOG VS. DIGITAL 3. 3. EE 9 Unit 3 Binary Representation Systems ANALOG VS. DIGITAL 3.3 3. Analog vs. Digital The analog world is based on continuous events. Observations can take on any (real) value. The digital world

More information

Number System (Different Ways To Say How Many) Fall 2016

Number System (Different Ways To Say How Many) Fall 2016 Number System (Different Ways To Say How Many) Fall 2016 Introduction to Information and Communication Technologies CSD 102 Email: mehwish.fatima@ciitlahore.edu.pk Website: https://sites.google.com/a/ciitlahore.edu.pk/ict/

More information

2a. Codes and number systems (continued) How to get the binary representation of an integer: special case of application of the inverse Horner scheme

2a. Codes and number systems (continued) How to get the binary representation of an integer: special case of application of the inverse Horner scheme 2a. Codes and number systems (continued) How to get the binary representation of an integer: special case of application of the inverse Horner scheme repeated (integer) division by two. Example: What is

More information

Midterm CSE 131 Winter 2013

Midterm CSE 131 Winter 2013 Login Name Signature _ Name Student ID Midterm CSE 131 Winter 2013 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 (21 points) (21 points) (21 points) (23 points) (18 points) (24 points) Subtotal (128 points

More information

CS 2505 Computer Organization I Test 1. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 1. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. This examination is closed book and closed

More information

CSE 30 Spring 2007 Final Exam

CSE 30 Spring 2007 Final Exam Login: cs30x Student ID Name Signature CSE 30 Spring 2007 Final Exam 1. Number Systems (25 points) 2. Binary Addition/Condition Code Bits/Overflow Detection (12 points) 3. Branching (19 points) 4. Bit

More information

Computer Organization & Systems Exam I Example Questions

Computer Organization & Systems Exam I Example Questions Computer Organization & Systems Exam I Example Questions 1. Pointer Question. Write a function char *circle(char *str) that receives a character pointer (which points to an array that is in standard C

More information

CSE 30 Fall 2007 Final Exam

CSE 30 Fall 2007 Final Exam Login: cs30x Student ID Name Signature CSE 30 Fall 2007 Final Exam 1. Number Systems (25 points) 2. Binary Addition/Condition Code Bits/Overflow Detection (12 points) 3. Branching (19 points) 4. Bit Operations

More information

CMSC 313 Lecture 03 Multiple-byte data big-endian vs little-endian sign extension Multiplication and division Floating point formats Character Codes

CMSC 313 Lecture 03 Multiple-byte data big-endian vs little-endian sign extension Multiplication and division Floating point formats Character Codes Multiple-byte data CMSC 313 Lecture 03 big-endian vs little-endian sign extension Multiplication and division Floating point formats Character Codes UMBC, CMSC313, Richard Chang 4-5 Chapter

More information

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed

CS 2505 Computer Organization I Test 2. Do not start the test until instructed to do so! printed Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

Oberon Data Types. Matteo Corti. December 5, 2001

Oberon Data Types. Matteo Corti. December 5, 2001 Oberon Data Types Matteo Corti corti@inf.ethz.ch December 5, 2001 1 Introduction This document is aimed at students without any previous programming experience. We briefly describe some data types of the

More information

EE 109 Unit 2. Analog vs. Digital. Analog vs. Digital. Binary Representation Systems ANALOG VS. DIGITAL

EE 109 Unit 2. Analog vs. Digital. Analog vs. Digital. Binary Representation Systems ANALOG VS. DIGITAL EE 9 Unit Binary Representation Systems ANALOG VS. DIGITAL Analog vs. Digital The analog world is based on continuous events. Observations can take on any (real) value. The digital world is based on discrete

More information

Experiment 3. TITLE Optional: Write here the Title of your program.model SMALL This directive defines the memory model used in the program.

Experiment 3. TITLE Optional: Write here the Title of your program.model SMALL This directive defines the memory model used in the program. Experiment 3 Introduction: In this experiment the students are exposed to the structure of an assembly language program and the definition of data variables and constants. Objectives: Assembly language

More information

Unit 3. Analog vs. Digital. Analog vs. Digital ANALOG VS. DIGITAL. Binary Representation

Unit 3. Analog vs. Digital. Analog vs. Digital ANALOG VS. DIGITAL. Binary Representation 3.1 3.2 Unit 3 Binary Representation ANALOG VS. DIGITAL 3.3 3.4 Analog vs. Digital The analog world is based on continuous events. Observations can take on (real) any value. The digital world is based

More information

Lecture (09) x86 programming 8

Lecture (09) x86 programming 8 Lecture (09) x86 programming 8 By: Dr. Ahmed ElShafee 1 Basic Input Output System BIOS BIOS refers to a set of procedures or functions that enable the programmer have access to the hardware of the computer.

More information

CSE 30 Fall 2012 Final Exam

CSE 30 Fall 2012 Final Exam Login: cs30x Student ID Name Signature By filling in the above and signing my name, I confirm I will complete this exam with the utmost integrity and in accordance with the Policy on Integrity of Scholarship.

More information

4/14/2015. Architecture of the World Wide Web. During this session we will discuss: Structure of the World Wide Web

4/14/2015. Architecture of the World Wide Web. During this session we will discuss: Structure of the World Wide Web Internet Gambling Investigations Architecture of the World Wide Web Ω Objectives During this session we will discuss: The term world wide web User interaction on the world wide web The purpose of gateways

More information

EXPERIMENT 8: Introduction to Universal Serial Asynchronous Receive Transmit (USART)

EXPERIMENT 8: Introduction to Universal Serial Asynchronous Receive Transmit (USART) EXPERIMENT 8: Introduction to Universal Serial Asynchronous Receive Transmit (USART) Objective: Introduction To understand and apply USART command for sending and receiving data Universal Serial Asynchronous

More information

3.1. Unit 3. Binary Representation

3.1. Unit 3. Binary Representation 3.1 Unit 3 Binary Representation ANALOG VS. DIGITAL 3.2 3.3 Analog vs. Digital The analog world is based on continuous events. Observations can take on (real) any value. The digital world is based on discrete

More information

5/17/2009. Digitizing Discrete Information. Ordering Symbols. Analog vs. Digital

5/17/2009. Digitizing Discrete Information. Ordering Symbols. Analog vs. Digital Chapter 8: Bits and the "Why" of Bytes: Representing Information Digitally Digitizing Discrete Information Fluency with Information Technology Third Edition by Lawrence Snyder Copyright 2008 Pearson Education,

More information

RS-232 Control of the Advantage DRI

RS-232 Control of the Advantage DRI RS-232 Control of the Advantage DRI Biamp Systems, 14130 N.W. Science Park, Portland, Oregon 97229 U.S.A. (503) 641-7287 an affiliate of Rauland-Borg Corp. Introduction This document contains technical

More information

EXPERIMENT 7: Introduction to Universal Serial Asynchronous Receive Transmit (USART)

EXPERIMENT 7: Introduction to Universal Serial Asynchronous Receive Transmit (USART) EXPERIMENT 7: Introduction to Universal Serial Asynchronous Receive Transmit (USART) Objective: To understand and apply USART command for sending and receiving data Introduction Universal Serial Asynchronous

More information

CSE 30 Winter 2009 Final Exam

CSE 30 Winter 2009 Final Exam Login: cs30x Student ID Name Signature CSE 30 Winter 2009 Final Exam 1. Number Systems / C Compiling Sequence (15 points) 2. Binary Addition/Condition Code Bits/Overflow Detection (12 points) 3. Branching

More information

Number Systems II MA1S1. Tristan McLoughlin. November 30, 2013

Number Systems II MA1S1. Tristan McLoughlin. November 30, 2013 Number Systems II MA1S1 Tristan McLoughlin November 30, 2013 http://en.wikipedia.org/wiki/binary numeral system http://accu.org/index.php/articles/18 http://www.binaryconvert.com http://en.wikipedia.org/wiki/ascii

More information

EE 109 Unit 2. Binary Representation Systems

EE 109 Unit 2. Binary Representation Systems EE 09 Unit 2 Binary Representation Systems ANALOG VS. DIGITAL 2 3 Analog vs. Digital The analog world is based on continuous events. Observations can take on (real) any value. The digital world is based

More information

The Binary Number System

The Binary Number System The Binary Number System Robert B. Heckendorn University of Idaho August 24, 2017 Numbers are said to be represented by a place-value system, where the value of a symbol depends on where it is... its place.

More information

Simple Data Types in C. Alan L. Cox

Simple Data Types in C. Alan L. Cox Simple Data Types in C Alan L. Cox alc@rice.edu Objectives Be able to explain to others what a data type is Be able to use basic data types in C programs Be able to see the inaccuracies and limitations

More information

CSE 30 Fall 2006 Final Exam

CSE 30 Fall 2006 Final Exam cs30x_ Student ID Name _ Signature CSE 30 Fall 2006 Final Exam 1. Number Systems _ (15 points) 2. Binary Addition/Condition Code Bits/Overflow Detection _ (12 points) 3. Branching _ (20 points) 4. Bit

More information

CMSC 313 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 02, FALL 2012

CMSC 313 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 02, FALL 2012 CMSC 33 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 2, FALL 22 TOPICS TODAY Bits of Memory Data formats for negative numbers Modulo arithmetic & two s complement Floating point formats

More information

CSE 30 Spring 2006 Final Exam

CSE 30 Spring 2006 Final Exam cs30x_ Student ID Name _ Signature CSE 30 Spring 2006 Final Exam 1. Number Systems _ (15 points) 2. Binary Addition/Condition Code Bits/Overflow Detection _ (12 points) 3. Branching _ (18 points) 4. Bit

More information

Final CSE 131 Winter 2010

Final CSE 131 Winter 2010 Student ID Login Name Name Signature _ Final CSE 131 Winter 2010 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 _ (26 points) _ (15 points) _ (36 points) _ (25 points) _

More information

Connecting UniOP to Datalogic Barcode Readers

Connecting UniOP to Datalogic Barcode Readers Connecting UniOP to Datalogic Barcode Readers This Technical Note contains the information needed to connect UniOP to Datalogic Barcode Scanners. Contents 1. Introduction...1 2. Designer setup...1 2.1

More information

Variables and data types

Variables and data types Programming with Python Module 1 Variables and data types Theoretical part Contents 1 Module overview 4 2 Writing computer programs 4 2.1 Computer programs consist of data and instructions......... 4 2.2

More information

Midterm CSE 131 Winter 2014

Midterm CSE 131 Winter 2014 Student ID Login Name _ Name Signature Midterm CSE 131 Winter 2014 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 (21 points) (36 points) (28 points) (16 points) (18 points) (20 points) Subtotal (139 points

More information

PureScan - ML1. Configuration Guide. Wireless Linear Imager Wireless Laser scanner - 1 -

PureScan - ML1. Configuration Guide. Wireless Linear Imager Wireless Laser scanner - 1 - PureScan - ML1 Wireless Linear Imager Wireless Laser scanner Configuration Guide - 1 - Table of Contents Chapter 1 System Information 1.1 About this manual 3 1.2 How to set up the parameter 3 Chapter 2

More information

Number Systems Base r

Number Systems Base r King Fahd University of Petroleum & Minerals Computer Engineering Dept COE 2 Fundamentals of Computer Engineering Term 22 Dr. Ashraf S. Hasan Mahmoud Rm 22-44 Ext. 724 Email: ashraf@ccse.kfupm.edu.sa 3/7/23

More information

CSC 8400: Computer Systems. Represen3ng and Manipula3ng Informa3on. Background: Number Systems

CSC 8400: Computer Systems. Represen3ng and Manipula3ng Informa3on. Background: Number Systems CSC 8400: Computer Systems Represen3ng and Manipula3ng Informa3on Background: Number Systems 1 Analog vs. Digital System q Analog Signals - Value varies con1nuously q Digital Signals - Value limited to

More information

o Echo the input directly to the output o Put all lower-case letters in upper case o Put the first letter of each word in upper case

o Echo the input directly to the output o Put all lower-case letters in upper case o Put the first letter of each word in upper case Overview of Today s Lecture Lecture 2: Character Input/Output in C Prof. David August COS 217 http://www.cs.princeton.edu/courses/archive/fall07/cos217/ Goals of the lecture o Important C constructs Program

More information

Midterm CSE 131 Fall 2014

Midterm CSE 131 Fall 2014 Login Name _ Signature Name _ Student ID Midterm CSE 131 Fall 2014 Page 1 Page 2 Page 3 Page 4 Page 5 (35 points) (30 points) (24 points) (24 points) (32 points) Subtotal (145 points = 100%) Page 6 Extra

More information

Computer Control of the Advantage DRC 4+4

Computer Control of the Advantage DRC 4+4 Computer Control of the Advantage DRC 4+4 Biamp Systems, 14130 N.W. Science Park, Portland, Oregon 97229 U.S.A. (503) 641-7287 an affiliate of Rauland-Borg Corp. Introduction This document contains technical

More information

D730. Remote Display Installation Manual

D730. Remote Display Installation Manual D730 Remote Display Installation Manual Copyright All Rights Reserved. No part of this document may be copied, reproduced, republished, uploaded, posted, transmitted, distributed, stored in or introduced

More information

Midterm Exam, Fall 2015 Date: October 29th, 2015

Midterm Exam, Fall 2015 Date: October 29th, 2015 Full Name: Midterm Exam, Fall 2015 Date: October 29th, 2015 Instructions: This midterm exam takes 70 minutes. Read through all the problems and complete the easy ones first. This exam is OPEN BOOK. You

More information

Universal Asynchronous Receiver Transmitter Communication

Universal Asynchronous Receiver Transmitter Communication Universal Asynchronous Receiver Transmitter Communication 13 October 2011 Synchronous Serial Standard SPI I 2 C Asynchronous Serial Standard UART Asynchronous Resynchronization Asynchronous Data Transmission

More information

Midterm CSE 131 Winter 2015

Midterm CSE 131 Winter 2015 Login Name _ Signature Name _ Student ID Midterm CSE 131 Winter 2015 Page 1 Page 2 Page 3 Page 4 Page 5 (30 points) (26 points) (28 points) (28 points) (30 points) Subtotal (142 points = 100%) Page 6 Extra

More information

Final CSE 131 Fall 2014

Final CSE 131 Fall 2014 Login Name Student ID Name Signature Final CSE 131 Fall 2014 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 (35 points) (24 points) (30 points) (32 points) (25 points) (36 points) (30 points)

More information

Do not start the test until instructed to do so!

Do not start the test until instructed to do so! Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other electronic devices

More information

CS 2506 Computer Organization II Test 2

CS 2506 Computer Organization II Test 2 Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other computing devices may

More information

CS 159 Credit Exam. What advice do you have for students who have previously programmed in another language like JAVA or C++?

CS 159 Credit Exam. What advice do you have for students who have previously programmed in another language like JAVA or C++? CS 159 Credit Exam An increasing number of students entering the First Year Engineering program at Purdue University are bringing with them previous programming experience and a many of these students

More information

CS 2505 Computer Organization I

CS 2505 Computer Organization I Instructions: Print your name in the space provided below. This examination is closed book and closed notes, aside from the permitted one-page formula sheet. No calculators or other computing devices may

More information

Characters Lesson Outline

Characters Lesson Outline Outline 1. Outline 2. Numeric Encoding of Non-numeric Data #1 3. Numeric Encoding of Non-numeric Data #2 4. Representing Characters 5. How Characters Are Represented #1 6. How Characters Are Represented

More information

Final CSE 131 Fall 2015

Final CSE 131 Fall 2015 Login Name Student ID Name Signature Final CSE 131 Fall 2015 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 (26 points) (24 points) (22 points) (18 points) (20 points) (22 points) (24 points)

More information

The following are the data types used in the C programming language:

The following are the data types used in the C programming language: Data Types in C The following are the data types used in the C programming language: Type Definition Size in memory void This particular type is used only in function declaration. boolean It stores false

More information

CMSC 313 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 02, SPRING 2013

CMSC 313 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 02, SPRING 2013 CMSC 313 COMPUTER ORGANIZATION & ASSEMBLY LANGUAGE PROGRAMMING LECTURE 02, SPRING 2013 TOPICS TODAY Bits of Memory Data formats for negative numbers Modulo arithmetic & two s complement Floating point

More information

FA269 - DIGITAL MEDIA AND CULTURE

FA269 - DIGITAL MEDIA AND CULTURE FA269 - DIGITAL MEDIA AND CULTURE ST. LAWRENCE UNIVERSITY a. hauber http://blogs.stlawu.edu/digitalmedia DIGITAL TECHNICAL PRIMER INCLUDED HERE ARE THE FOLLOWING TOPICS A. WHAT IS A COMPUTER? B. THE DIFFERENCE

More information