Topic 2.1 and 2.2 Keywords

A number system that contains two symbols, 0 and 1.

Also known as base 2.

• Bits

• Binary

• Denary

• Bytes

The number system most commonly used by people.

It contains 10 unique digits 0 to 9.

Also known as decimal or base 10.

• Bit

• Binary

• Denary

• Bytes

A number system using 16 symbols from 0-9 and A-F, also known as  base 16

• Binary

• Denary

• Hexadecimal

• ACSII

A Binary number that can only represent positive numbers

• Real

• Integer

• Unsigned Integer

• Signed Integer

Numbers with a “+” or “-“ sign.Positive numbers always start with a 0.

• Real

• Integer

• Unsigned Integer

• Signed Integer

The bit at the far left of the bit pattern - the most significant bit or MSB - is used to indicate positive or negative and the remaining bits are used to store the actual size of the number. Positive numbers always start with a 0.

• One's Component

• Two's Component

• Three's Component

• Components

Occurs when the result of adding two binary numbers is greater than the number of bits allowed. The maximum value that can be held with 8 bits is 255.

• Overflow

• Binary Addition

• Syntax

• Syntax Error

The smallest single point of colour in an image

• Dot

• RGB

• Pixel

• LED

Pixel is short for..

• Picture Element

• Picture Excel

• Picture Light

• Picture Dot

How many (concentration of) pixels are displayed per inch of an image.

• Display

• Screen

• Graphics

• Resolution