Angel International School - Manipay 1 st Term Examination November, 2015 ICT

Transcription

1 Grade 07 Angel International School - Manipay 1 st Term Examination November, 2015 ICT I. Underline the correct answer. Duration: 2 Hours Index No:- 1) Components of a computer CPU are (a) ALU, CU (b) ALU, CU, CPU 2) Which one of the following is not a pointing device? (a) Light Pen (b) Joystick (c) Array, CU, ALU (d) CU, ALU, Memory (c) Keyboard (d) Mouse 3) Technologies used in First, Second Third & Fourth generations: (a) Vacuum tubes, Transistors, Microchips, IC (b) Vacuum tubes, Microchips, Transistors, IC (c) Vacuum tubes, IC, Microchips, Transistors (d) Vacuum tubes, Transistors, IC, Microchips 4) People who specialize in programming a computer are called (a) Computer programmers (b) Trainees (c) Engineers (d) Teachers 5) Performs arithmetic calculations and logical comparisons (a) CU (c) Memory (b) ALU (d) UPS 6) The Father of the Computer is: (a) Blaise Pascal (b) John Napier 7) What does CPU stand for? (a) Central Processing Unit (b) Central Profit Unit (c) Charles Babbage (d) Herman Hollerith (c) Capital Product Units (d) Central Product Unit 8) The part of a computer that processes instructions, performs calculations, makes logical decisions and manages the flow of data through the computer system is know as (a) Hard Disk (b) RAM (c) Data Bus (d) CPU 1

2 9) Consider the following statements. A - Keyboard is an input device B - Monitor is an output device C - Compact disk is a storage device Which of the above is/are true? (a) A only (b) B only 10) What does ROM stand for? (a) Resting Only Memory (b) Right On Memory (c) A and C only (d) All A, B and C (c) Read Only Mess (d) Read Only Memory 11) 1 kilobyte is equal to (a) 1024 bytes (b) 1024 bits 12) Which device can normally store the most data? (a) A floppy disk (b) A hard disk 13) What does RAM stand for? (a) Remote Authorization Mechanism (b) Readily Accessed Mailer (c) 1000 MB (d) 1000 GB (c) ROM (d) RAM (c) Random Access Memory (d) Random Authorization Mechanism 14) The device which is used for both as input and output device (a) CPU (c) LCD Screen (b) Touch Screen (d) Scanner 15) What is the correct answer for a feature of a portable computer? (a) Lightweight (b) Small (c) LCD screen (d) All of the above 16) A typical floppy disk has a stiff plastic cover and stores (a) Bytes (b) KB (c) 1.44 MB (d) 1.44 GB 17) What does GUI stand for? (a) Grand Unification Interface (b) Graphical User Interface (c) Greater Uses Interface (d) Great Untold Interface 18) The most common word is use to describe the physical component of a computer is (a) Software (b) Hardware (c) Firm ware (d) Live ware 19) Which of the following is not a storage device? (a) DVD (b) Hard Disk (c) Floppy Disk (d) Mouse 2

3 20) A printed document is called (a) Hardcopy (b) Softcopy (c) CR copy (d) Printer copy 21) The decimal equivalent of is (a) 5 (b) 6 (c) 10 (d) 12 22) The binary equivalent of decimal 15 is (a) (b) (c) (d) ) The binary equivalent of the decimal number 33 is.. (a) (b) (c) (d) ) The main purpose of using an Uninterruptible Power Supply (UPS) in a computer system is to (a) Provide backup power in the case of a mains power failure (b) Provide the computer system from lighting. (c) Provide (Direct Current) DC power to the computer circuitry. (d) Change the internal battery of the computer. 25) The network which covers the Town/City area is called as (a) WAN (b) BUS (c) MAN (d) CAN 26) How much information can a CD (Compact Disk) usually store? (a) 700 Mb (c) 150 Mb (b) 1.4 Mb (d) 70 Mb 27) Which device is capable of recognizing a pre-specified mark made with a dark pencil or ink? (a) OMR (c) MICR (b) CRT (d) OCR 28) Which gives you the correct data hierarchy? (a) Bit, Byte, Kb, GB, Mb (b) Mb, GB, Byte, Kb, Bit (c) Bit, Byte, Kb, Mb, GB (d) Bit, Kb, Byte, Mb, GB 29) To identify the magnetic characters in a bank cheque the devices that used is: (a) MCR (b) MICR (c) OMR (d) MSR 30) A computer network which is limited to a small area is known as a (a) LAN (b) WAN (c) VAN (d) MAN (30 Marks) 3

4 II. Fill in the blanks. ENIAC, Charles Babbage, 16, Laser, 4.7, Barcode Reader, Pascaline, Operating System, Byte, Dot - Matrix 1) The first mechanical calculating machine was invented by Blaise Pascal. 2) The first programmable machine was the Analytical engine designed by, as early as ) The was the first electronic computer, which used vacuum tubes and filled an entire room. 4) A printer prints characters s pattern of dots. 5) An8-bit unit used to code digital data is called a. 6) A printer prints out a full page at a time. 7) is a set of programs that makes the hardware function. 8) Total number of unique digits in a hexadecimal number system is. 9) is used for reading bar coded data. 10) A DVD can hold around GB of data. (10 Marks) III. State whether True or False. 1) The principal function of RAM is to temporarily hold data and instructions required for immediate processing. (..) 2) Impact printers give better quality than non-impact printers. (..) 3) A 1200dpi printer will give a sharper image as compared to a 600dpi printer. (..) 4) E in hexadecimal system is equivalent in 13 in decimal number system. (..) 5) Microphone sound recorder is a voice input device. (..) (10 Marks) IV. Answer the questions. 1) Write 4 most popular computer languages. (04 Marks) (i) (ii) (iii) (iv) 2) Write 3 differences between RAM and ROM. (06 Marks) RAM ROM (i) (ii) (iii) 3) Name 4 input devices and explain about them. (10 Marks) 4

5 4) Write 4 differences between Impact printers and non impact printers. (08 Marks) 5) What problem do you think you can have while using a voice recognition system to dictate a letter to a computer? (02 Marks) 6) Convert these decimal numbers to binary numbers. (10 Marks) (i) 26 (ii) 45 (iii) 12 (iv) 31 7) Convert these binary numbers to decimal numbers. (10 Marks) (i) (ii) (iii) (iv) ***** 5