mith College Computer Science CSC231-Assembly Week #1 Fall 2018 Dominique Thiébaut
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1 mith College Computer Science CSC231-Assembly Week #1 Fall 2018 Dominique Thiébaut
2 This Week Last name: A-N > Lab Monday, Off Wednesday Last name: M-Z > Off Monday, Lab Wednesday
3 Plan Form teams of 3 people Move all the chairs to the side Get a PC (not dead, but soon to be) Fill out sign-up sheet Take apart the PC Recognize important components, take photos
4 Plan (Cont'd) Remove processor from mother-board Remove motherboard from computer Remove disk drive from computer Take apart disk drive (if you have time) Keep any of the components you like Put everything back in the case for EXTRA CREDITS
5 Plan (Cont'd) You need to document: The open computer case The motherboard The power supply The processor. You need to indicate the name of the manufacturer, and the name of the processor, as written on it. The memory (RAM). Try to figure out what the manufacturer of the RAM is. How much RAM (in Gigabytes) was in the computer? The hard disk. Indicate its capacity, in Gigabytes. One of the crystals that generate the high frequency signal to the computer. Can you read the frequency written on its case? The optical drive, or DVD drive (if there's one) The connectors in the back of the computer (including USB connectors) Some of the cables connecting the motherboard to various peripherals. You are ready for Homework #1!
6 We stopped here last time
7 A Microprocessor Simulator (Friday's Lecture)
8 Smithies in CS will be hosting an event with Coinbase, a digital currency exchange based in san Fransisco, next Wednesday, September 19th 4:30-6:30pm in CC204. We will be learning about blockchain and cryptocurrency. And there will be an information session after the workshop with a Coinbase recruiter about its recruiting process and open positions.
9 The Processor
10 Let's Play a Game
11 00 Really? 01 Hello 02 How are you? 03 Did you enjoy breakfast? 04 Was it good? 05 Have you stared on the homework? 06 Do you like apples? 07 Do you like bananas? 08 Goodbye! Rules #1 00 No 01 Yes 02 Good 03 Bad 04 A tiny bit 05 A lot 06 Sometimes 07 Hello! 08 Sad 09 Goodbye!
12 00 Really? 01 Hello 02 How are you? 10 Did you enjoy? 04 Was it good? 05 Have you stared on the homework? 11 Do you like 08 Goodbye! 12 Apples 13 Bananas 14 Breakfast Enhancement 00 No 01 Yes 02 Good 03 Bad 04 A tiny bit 05 A lot 06 Sometimes 07 Hello! 08 Sad 09 Goodbye! #1
13 Enhancement How could we setup a conversation for the whole class? #2
14 00 Really? 01 Hello 02 How are you? 10 Did you enjoy? 04 Was it good? 05 Have you stared on the homework? 11 Do you like 08 Goodbye! 12 Apples 13 Bananas 14 Breakfast Enhancement 00 No 01 Yes 02 Good 03 Bad 04 A tiny bit 05 A lot 06 Sometimes 07 Hello! 08 Sad 09 Goodbye! #1
15 On Infinite Verbal Loops
16 Important Concepts Codes, codes, codes Numbers can represent questions, as well as answers The same number can have different meanings, depending on context With the right choice of questions and answers, coded as numbers, one could have a rich conversation!
17 Important Concepts Relating to Computers Only numbers can be stored in memory The memory is made of bits Bits represent binary digits The memory contains only binary numbers Using codes, the numbers can be used to represent characters (a, b, A, B, 0, 1, #, & ) Using codes, the numbers can be used to represent actions to be executed by the processor Using codes, the binary numbers can be used to represent decimal numbers, integer, or real (1, -2, 10, )
18 The ASCII Table American Standard Code for Information Interchange
19 Hand Calculator Example
20 Assembly Language With a Simulator
21 The Key Players Processor AC PC + Memory
22 LOAD STORE ADD Types of Operation Supported Processor AC PC + Memory
23 LOAD instruction Example Processor AC PC Load [9]
24 STORE instruction Example Processor AC PC Store [10]
25 ADD instruction Example Processor AC PC ADD 3
26 EXERCISE Write an assembly language program that takes the number stored at Address 9, adds 1 to it, and stores the result back at Address 9 Processor AC PC
27 JUMP instruction Example Processor AC PC Jump 0 Store [9] Add 1 Load [9]
28 HALT instruction Example Processor AC PC Halt Store [9] Add 1 Load [9]
29 Computer Simulator
30 Resources Link to the simulator Link to the documentation
31 Exercise Write an assembly language program that uses 4 variables in memory, containing, 3, 4, 10, and 0, respectively. The program will compute the sum of the first 3 and store the result in the 4th variable. Run your program on the simulator
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