KS3 Computing

CS12: understand how data of various types (including text, sounds and pictures) can be represented and manipulated digitally, in the form of binary digits

Keywords:
Computer Science
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KeywordDefinition
analoguea type of recording which hasn't been converted into binary 1s and 0s
ASCIIa way of represening text where each character in the American alphabet can be represented by a number less than 128
binarya way of representing data that only uses 1s and 0s, which computers can process easily as electronic on / off signals
bitone binary digit (a single 1 or 0)
bitmapa way of representing images by splitting them up into pixels. The colour of each pixel can be described by a number (black & white) or numbers (colour)
charactera single letter or digit that can be used ot make up words or text
digitala type of recording which has been converted into binary 1s and 0s
file sizethe number of bits, bytes, kilobytes or megabytes needed to store a file
picturea type of data where each pixel or shape in a picture can be represented by a number
pixelan individual coloured dot that makes up part of a bitmap image
samplean individual measure of the volume of a sound recording at any moment in time
sounda type of data where each sample of a recording of speech or music and be represented by a number
stringa type of data that consists of zero or more characters to describe text
texta type of data where each character of a written message can be represented by a number
vectora way of representing images by splitting them up into lines and shapes. Each colour and shape can be described by numbers or characters
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