Number bases: Fundamentals of data representation: Computer Science: GCSE (9:1)

Binary

A base 2 number system in which all numbers are made from 2 digits (0-1), it can be processed by the computer's logic gates

Instruction

A single operation performed by a computer, it is stored as a binary code

Data

Information stored in a computer as binary codes

Decimal

The base 10 number system in which all numbers are made from 10 digits (0-9), also called denary

Hexadecimal

The base 16 number system in which all numbers are made from 16 characters (0-9 and A-F)

Base

The number of digits used by a number system. This is 2 in binary and 10 in denary. It also determines place value (the value a digit has because of it's place or column)

2

Binary is the Base ___ number system

10

Denary is the Base ___ number system

16

Hexadecimal is the base ___ number system

FF

Hexadecimal representation of decimal number 255

1A

Find the hexadecimal representation of decimal number 26

1111

4-bit binary representation of the hexadecimal digit F

1100

Find the 4-bit binary for decimal number 12

1000 0000

Convert the decimal number 128 to binary

1111 1111

Binary representation of the largest number we can store in 1 byte

161

Convert A1 to decimal