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Computer Science IGCSEPDF 133
142 pagesrevision 46930
PDF 133
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Expression
Expression
Expression
Symbol
Symbol
Symbol
Function
Itreturns True if both the
inputs are true or 1.
Function
It returns True if either or
both of the inputs are
false or 0.
Function
Itreturns True if either of
the inputs are false or 0.
Input A
1
1
0
0
Input A
1
1
0
0
Input A
1
1
0
0
Truth Table
Truth Table
Truth Table
Input B
1
0
1
0
InputB
1
0
1
0
Input B
1
0
1
0
Output
1
0
0
0
Output
0
1
1
1
Output
1
1
1
0
A OR B
A AND B
A NAND B
OR
NAND