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Flashcards in Fundamentals of a computer system Deck (107)
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1

What is a computer?

An electronic device which processes data according to given instructions and produces output

2

What are the five features of a computer?

Speed
Accuracy
Efficiency
Versatility
Storing and retrieving

3

Explain accuracy of a computer

It provides accurate output

4

Explain efficiency of a computer

It doesn't become tired

5

Explain the versatility of a computer

It can be used to perform many tasks simultaneously

6

Explain the storage of a computer

It can be used to store a lot of data in a small space

7

What are the two ways by which computers are classified?

By physical size and technology

8

What are the four ways computers are classified according to physical size?

Super computers
Mainframe computers
Mini computers
Micro computers

9

What are super computers?

Large, expensive, rare and powerful computers

10

Where are super computers used? (3)

NASA
Large scale businesses
Military purposes

11

What are mainframe computers?

Smaller, less expensive and less powerful computers when compared to super computers

12

Where are mainframe computers used? (2)

Large scale businesses
E-businesses

13

What is a special place where mainframe computers are used?

Online transactions

14

What are mini computers?

Smaller, less expensive and less powerful computers when compared to mainframe computers

15

What is another name by which mini computers are called?

Common purpose computers

16

How are mainframe computers used?

Users connect to the central computer through terminals

17

What are the special features of mini computers?

Easy to use
Few users connect to the central computer through terminals

18

Where are mini computers used?

Medium scale institutions

19

What are micro computers?

Small computers meant for personal use

20

Name a few examples of micro computers (3)

Laptops
Handhelds
Smartphones

21

What are the two ways computers are classified based on their technology?

Analog and digital computers

22

What are analog computers?

Computers which use analog signals

23

Give a few examples for analog data (1-3)

Environmental parameters such as speed, pressure temperature

24

Give a few examples for analog computers (2)

Speedometers
Meteorological machines

25

What are digital computers?

Computers which use digital signals

26

What are hybrid computers?

A combination of analog and digital computers

27

What are the main functions of a computer?

Input, process, store data and output information

28

Computer system diagram (Page ?)

Page 36

29

Explain the process of a computer system

Data and instructions fed via input devices are sent to the primary memory and then sent to the CPU. Processed data stored in the primary memory is then sent as information to the output devices. The data to be stored is sent to the secondary storage. The control unit sends control signals to all devices. When a program is executed relevant data and instructions are sent to the CPU

30

What does the control unit do?

It sends signals to all devices