Data representation

Question 1

Define Denary system:

Answer 1

Number system based on the number 10.

Question 2

Define Binary system:

Answer 2

Number system based on the number 2.

Question 3

Define Hexadecimal system, what is it used for?

Answer 3

Number system based on the number 6. Used for memory dumps, HTML, Mac adresses, Web adresses and assembly code.

Question 4

Register:

Answer 4

Small piece of memory where values can be held

Question 5

Hexadecimal system:

Answer 5

Based on a 16 digit number system and uses the digits 0-9 and lettes A-F.
A=10
F=15

Question 6

What is meant by a byte?

Answer 6

A byte is the smallest unit of data on a computer (in 8 bits).

Question 7

Convert 10111100 into hexadecimal natation:

Answer 7

BC

Question 8

What is the point of using hexadecimal instead of binary?

Answer 8

It is easier because it contains the letters A-F.

Question 9

1010, equivalent decimal number is…

Answer 9

10

Question 10

1111, equivalent decimal number is…

Answer 10

15

Question 11

convert the following denary number into binary (248)..

Answer 11

11111000

Question 12

convert the following denary number into binary (191)..

Answer 12

10111111

Question 13

How are character represented in a computer system?

Answer 13

text, numbers and symbols.For example they keys on the keyboard.