Prelim Revision <3

A numeric system that only uses two digits (0 and 1)

Standard number system (0,1,2,3,4,5,6,7,8,9)

A whole number (-ve, +ve or 0)

Numbers with a decimal point

ANY number (-ve, +ve, 0, decimals, fractions etc)

If the most significant bit (MSB) is +ve or -ve depends on left number (1 is negative 0 is positive)

The difference from lowest to highest in a set of numbers Example: 8 bits -2^8-1 to (2^8-1)-1

The number located after the point

The power that is used to determine how far the point has moved

How accurate it can reproduce the original number

American Standard Code (for) Information Interchange ASCII uses 7-bits and so can store up to 128 characters

Extended ASCII uses 8-bits and so can store up to 256 characters SCOTT’S NUMBER

16-bits per character! Meaning it can store a maximum of 65 536 different character.

Literally the stuff you print (letters, numbers, punctuation)

Characters that can be stored in a particular representation

Unicode

The most basic component of a computer graphic

A map of pixels, each pixel has a binary number that determines its colour

A measure of the number of pixels in an image

The number of bits assigned to each pixel (hence the max amount of colours that can be used in an image)

2D point located polygons to represent images in computer graphics

Usually used to depict lifelike images

Used for abstract images (like logos)

A collection of wires inside the computer that can transfer info and send signals