ECAT Computer Science Online Test With Answers

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ECAT Computer Science Online Test

Sr. # Questions Answers Choice
1 Computer output produced as small film images is called OMR LCD COM OCR
2 Computer output produced as small film images is called OCR COM LCD OMR
3 A color screen with the best resolution MICR VGA SVGA LCD
4 Which input device is often attached to laptop computers: trackball inscriber wand reader graphic display
5 The mechanism for reading or writing data in a disk is called track access arm seek time rorational delay
6 The mechanism for reading or writing data in a disk is called access arm rorational delay seek time track
7 The mechanism for reading or writing data in a disk is called track rorational delay access arm seek time
8 The cursor can be moved rolling this devices on a flat surface: mouse trackball want reader interactive tablet
9 Imaging used what devices to input data? scanner barcode reader icon tablet
10 Voice input device convert voice input to digital code OCR-A bar codes optical marks
11 Laser beam technology is used for terminals optical disk keyboard magnetic tape
12 Which of the following does not support I/O devices speaker OCR joystick ALU
13 An example of peripheral devices CPU Printer Spreadsheet microcomputer
14 The equipment attached to CPU which computer can access are called computer components input output devices peripherals Hardware
15 The equipment attached to CPU which computer can access are called Hardware input output devices peripherals computer components
16 The unit that transform data in informaion is the CPU ROM DVD OCR
17 The heart of the digital computer is control unit memory unit logic unit visual display unit
18 During E time the ALU examines the instruction enters the instruction executes the instruction elicits the instruction
19 The entire computer is coordinated by The ALU the accumulator arithmetic operators the control unit
20 The central processing unit comprises of software,hardware,and power supply unit software arithmetic and logic unit,and control unit memory ,VDU and printers input devices output devices and memory
21 The central processing unit comprises of memory ,VDU and printers software,hardware,and power supply unit input devices output devices and memory software arithmetic and logic unit,and control unit
22 A CPU has control unit consisting of program counter and instruction decoded,and arithmetic unit having accumulator. bubble memory visual display unit auxiliary storage unit
23 The first computer to use electrical power was developed by Herman Hollerith Thomas J,Watson John.V Atanasoff Howard Aiken
24 Who is regarded as the father of computers John Napier Pascal Charles Babbage Hollerith
25 A hybrid computer is the one having combined properties of super and microcomputers mini and microcomputers analog and digital computers none of the above
26 The analog computer deals directly with number of pulses measured values of continuous physical magnitudes signal in the form of 0-1 signal in discrete values from 0-9
27 An analog computer can be worked directly with magnetic tapes punched card magnetic disk none of the above
28 The use of computer for business application is attractive because of its accuracy reliability speed all of above
29 Binary Coded decimal number express each decimal digit as binary digits nibble word byte
30 A digital computer performs its computation by counting guessing analogy mechanical means
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