Wassce (Waec) 2018 Computer Studies-ICT Questions And Answers

1A)

i) A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically. Modern computers have the ability to follow generalized sets of operations, called programs.

ii)

Processor.

Main memory.

Secondary memory.

Input devices

Output devices.

1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

1bii)

EDSAC

Electronic Delay storage Automatic Calculator

EDVAC

Electronic discrete Variable Automatic computer

2a)

Register is one of a small set of data holding places that are part of a computer processor. it hold computer instruction , a storage address , or any kind of data (such as a bit sequence or individual character).

2b)

i)memory address register(Mar)

ii)program counter

iii)Accumulator Register(AC)

iv)Memory data Register(MDR)

2c)

i)Register is used to quickly accept , store and transfer data and instructions that are being used immediately by the CPU

ii)Register is used for storing the results that are produced by the system

iii)MDR is the register of a computer's control unit that contains the data to be stored in the computer storage or the data after a fetch from the computer storage

1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

2a)

2b)

i)memory address register(Mar)

ii)program counter

iii)Accumulator Register(AC)

iv)Memory data Register(MDR)

2c)

i)Register is used to quickly accept , store and transfer data and instructions that are being used immediately by the CPU

ii)Register is used for storing the results that are produced by the system

iii)MDR is the register of a computer's control unit that contains the data to be stored in the computer storage or the data after a fetch from the computer storage

1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

2a)

2b)

i)memory address register(Mar)

ii)program counter

iii)Accumulator Register(AC)

iv)Memory data Register(MDR)

2c)

i)Register is used to quickly accept , store and transfer data and instructions that are being used immediately by the CPU

ii)Register is used for storing the results that are produced by the system

iii)MDR is the register of a computer's control unit that contains the data to be stored in the computer storage or the data after a fetch from the computer storage

1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

1aii)

Major Component of computer

i)Central processing unit(CPU)

ii)Input unit

iii)Output unit

iv)storage unit

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1ai)

Computer system is a connection of electro-mechanical devices that link together forming a system inorder to perform automatic data processing (EDP)using software

1aii)

Major Component of computer

i)Central processing unit(CPU)

ii)Input unit

iii)Output unit

iv)storage unit

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1bi)

i)Collection

ii)conversion

iii)Manipulation

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(1bii)

i)EDSAC:

Electronic Delay storage Automatic Calculator

ii)EDVAC:

Electronic discrete Variable Automatic computer

Computer-Ans

5ai)

booting is the initialization of a computerized system.

5aii)

Cold booting: when the computer is started after having been switched off. While Warm booting: when the operating system alone is restarted (without being switched off) after a system crash or 'freeze.'

5b)

A peripheral is an ancillary device used to put information into and get information out of the computer."

5ci.

Keyboard

5cii.

Printer

5ciii.

Flash

5civ.

Processor