Digital Electronics

Job: 1

A staircase light is controlled but two switches, one at the top of the stairs  and 

another at the bottom of the stairs.

a)                  Make a truth table of the system.

b)                  Write the logic equation in sop form.

c)                  Realize the circuit using AND, OR and NOT gates.

Implementation:

           

a) Truth table of the system:

                                   

           A       B       F

0	0	0
0	1	1
1	0	1
1	1	0

                                                           

                                                           

b) The logic equation of the given system in SOP form.

                   

                          F= A’B + AB’

c) The circuit of the system by using AND, OR and NOT gates.