1.How is data transmitted in analog computers?
[A] Continuous Signals
[B] Discrete Signals
[C] Intermittent Signals
[D] Interrupted Signals
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Explanation: In Analog computers, data is transmitted for operation in the form of continuous signals. ©navclasses
2.Which of the following comprise vital electronic components of an analog clock?
[A] Multipliers
[B] Potentiometers
[C] Operational amplifiers
[D] All of the above
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Explanation: Key electronic components of an analog computer include precision resistors, multipliers, potentiometers, operational amplifiers, fixed-function generators etc. ©navclasses
3.Where are the instructions which are used to run a digital computer stored?
[A] Motherboard
[B] Hard Disk
[C] Memory
[D] All of the above
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Explanation: The digital computer works by counting, comparing and manipulating various digits and their combinations as per the instructions which are stored in the memory. ©navclasses
4.What controlled the data-processing operations in the Harvard Mark I?
[A] Electric relays
[B] Memory
[C] Switching Devices
[D] Both 1 and 3
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Explanation: In Harvard Mark I the data-processing operations are primarily controlled by electric relays or switching devices. ©navclasses
5.Personal computers in the 2010s have access to which of the following kinds of softwares?
[A] Freeware
[B] Free and Open Source Software
[C] Commercial Software
[D] All of the above
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Explanation: Personal Computers in the 2010s as compared to earlier models had access to a wide range of softwares viz. commercial softwares, freeware, free and open source software etc. ©navclasses
6.Which was the earliest commercial, non-kit microcomputer based on a microprocessor?
[A] MIR Series
[B] Micral N
[C] Datapoint 2200
[D] HP 9800
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Explanation: Micral N was the earliest commercial, non-kit microcomputer based on a microprocessor. It was built in 1972 and only a few hundred units were sold. Micral is a series of microcomputers produced by a French company R2E. ©navclasses
7.Which of the following machines were referred to as 1977 trinity?
[A] Commodore PET
[B] Apple II
[C] TRS-80
[D] All of the above
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Explanation: Commodore PET was the first successfully mass marketed personal computer. Apple II and also TRS-80 all together was referred to as the 1977 Trinity. ©navclasses
8.This part of the computer does all of the ‘thinking’. It can carry out billions of instructions per second and gets very hot.
[A] Motherboard
[B] Hard Drive
[C] Processor
[D] RAM
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Explanation: A processor is the computer’s engine. The CPU is the part that actually does stuff by following the instructions of the computer program that it’s running. ©navclasses
9.A CPU contains which of the following?
[A] A card reader and a printing device
[B] An analytical engine and a control unit
[C] A control unit and an arithmetic logic unit
[D] An arithmetic logic unit and a card reader
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Explanation: CPU is the main processing unit of a computer system. It consists of a control unit and an arithmetic logic unit. A central processing unit (CPU) carries out the instructions of a computer program by performing the basic arithmetic, logic, controlling, and input/output operations specified by the instructions. ©navclasses
10.Which of the following store data temporarily and pass it on as directed by the control unit?
[A] Address
[B] Register
[C] Number
[D] Memory
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Explanation: CPU registers perform a variety of functions, a primary one of which is to offer temporary storage for the CPU to access information stored on the hard drive. ©navclasses
