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## Ignore words

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binary code

2 state system, usually TRUE/FALSE, 1/0, ON/OFF

binary number

a numeric value using base 2 (binary place headings)

binary place headings

128, 64, 32, 16, 8, 4, 2, 1

0-255

range of integer values for 1 byte

256 patterns

number of binary codes for 1 byte

integer

a whole number without any fraction part

real number

a number with fraction part (digits after the point), needs floating point representation)

floating point

method to store real numbers in two parts: mantissa and exponent

mantissa

the digits of a real number value (no point included), part of floating point

exponent

the position of the point for a real number, part of floating point

ascii

64 thousand characters

256 characters

number of letters, symbols represented using ASCII

control character

a non-printing character in ASCII, causes an action, eg deleting a character

character set

the set of letters, symbols represented using ASCII (256 characters)

bitmap

each pixel in an image is coded as a binary value eg white is 0, black is 1

pixel

picture cell, a single dot in an image

resolution

the number of pixels used in an image

dots per inch

the number of pixels used per inch, resolution (dpi)