253Code Converters, Comparators and Other Logic Processing Circuits
0101zz%5EUeu
0110zz&6FVfv
0111zz7GWgw
1000zz(8HXhx
1001zz)9IYiy
1010zz*:JZjz
1011zz+;K[k{
1100zz,<L\l|
1101zz-=M]m}
1110zz.>N^n~
1111zz/?O_oDEL
Note: z means that it is one of the keyboard specific special codesfor example, 0001101 is ASCII code for CR (carriage
return). SP in third ASCII code column means code generated when the space key of keyboard presses. ~ sign mean key-
board specific Escape character. DEL means Delete character.
11.2EQUALITY AND MAGNITUDE COMPARATORS
BETWEEN TWO FOUR-BIT NUMBERS
An important operation in the computations requires a comparison ...
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