ASCII
127 characters
grouping
There are different codes for capital letters
lower case
65-90
97-122
in 7 bits
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Old
limted
First 32
teletypes
old system
numbers
mainframe
used S
commands three letter
send
receive
128 characters
dont match binary values
what they need to know
Computers use
binary
character sets inbinary rep
first 32 chars
special
space
enter
l
0 at front to make it one byte
resolve compatibility issues
standarisation
limited
extended ASCII
european langauges
accents
tildes
mathematcal operators
96 characters
31 puntuation marks & special symbols
£ to relace #
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became several variants
e.g. £ to replace #
mathetaical operators
computing operators
Unicode
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Unicode
16 bit 32 bit
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UTF-8
variable size
variable
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