Data types and representing images - Chapter 1

string

• e.g. password.

• sequence of characters

• random number

• set of symbols

downloading

• receive a file for storage and later use

• uploading a file to the internet

• deleting a file from storage

• compressing a file for faster transfer

buffer

• stores part of the video download before it is watched

• increases the resolution of a video

• reduces the file size of a video

• enhances the audio quality of a video

image resolution

• QUALITY of an image

• The size of the image in pixels

• The color depth of the image

• The format of the image file

character

• single letter or digit

• a group of letters

• a punctuation mark

• a special symbol

integer

• whole number - positive and negative

• fractional number

• decimal number

• irrational number

bitmap graphic

• large file size

• loses quality when resized

• supports transparency

• is resolution independent

date/time

• short date

• medium date

• long date

• full date

pixel

• smallest unit of an image

• largest unit of an image

• a type of graphic design software

• a color filter used in photography

streaming

• allows video to be viewed straight away without downloading

• requires the entire video to be downloaded before viewing

• is a method of storing videos on a hard drive

• is a type of video compression technique