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High School Computer Studies Revision Questions With Answers

Institution: Secondary

Course: Secondary

Content Category: Tutorials

Posted By: paul nyarotso

Document Type: DOC

Number of Pages: 240

Price: KES 250
 
    

Views: 822     Downloads: 0

Summary

INTRODUCTION TO COMPUTERS
1. (a) Clearly define a computer
- A computer is an electronic device that operates (works) under the control of programs stored in its own memory unit
- An electronic device that accepts data, as input and transforms it under the influence of a set of special instructions called programs, to produce the desired output (referred to as information)

(b) Give one reason why a computer is refered to as an electronic device
- It uses electrical signals to process data
- It is made up of electronic components and uses electric energy to operate

2. Explain the following terms as used in computer science
(i) Data
A collection of raw facts, figures or instructions that do not have much meaning to the user

(ii) Program
A computer program is a set of related instructions which specify how data is to be processed
A set of instructions used to guide a computer through a process


(iii) Data processing
It is the process of collecting all terms of data together & converting them into information
...................................


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