Switching Functions
Switching algebra: Boolean algebra with the set of elements K = {0, 1}
If there are n variables, we can define switching functions.
Sixteen functions of two variables (Table 2.3):
A switching function can be represented by a table as above, or by a switching expression as follows:
f0(A,B)= 0, f6(A,B) = AB' + A'B, f11(A,B) = AB + A'B + A'B' = A' + B, ...
Value of a function can be obtained by plugging in the values of all variables:
The value of f6 when A = 1 and B = 0 is: = 0 + 1 = 1.