Section 3.2
OR Operation
The expression X = A + B reads as "X equals A OR B".
The + sign stands for the OR operation, not for ordinary addition.The OR operation produces a result of 1 when any of the input variable is 1.
The OR operation produces a result of 0 only when all the input variables are 0.
An example of three input OR gate and its truth table is as follows:
With the OR operation, 1 + 1 = 1, 1+ 1 + 1 = 1 and so on.
