Page 45 - Handout Digital Electronics
P. 45
Truth table
A F
0 0
1 1
6.4 The OR Logic Gate
A basic OR logic gate works with two inputs and 1 output. The output of the OR gate is true (logical 1)
when either one or both inputs are logical ones (1s) and is false otherwise (0).
Standard symbol
Truth Table
A B F
0 0 0
0 1 1
1 0 1
1 1 1
Note that the output value is 1 when at least one input value is 1
6.5 The AND logic gate
A basic AND logic gate operates with two inputs and one output. The output of an AND gate is a
logical 1, only and only when both of its inputs are logical 1s and is false otherwise
Standard symbol
Truth Table
A B F
0 0 0
0 1 0
1 0 0
1 1 1
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