There are 4 PCs in a small lab that is networked to a server

There are 4 PC\'s in a small lab that is networked to a server. Design a circuit that will indicate when two or more PCs are in used. When a PC is in used it has a value of one and a zero otherwise. Part l. construct the truth table Part 2. Use k-maps to simplify the function & write the equations Part |3. implement the circuit.

Solution

Part-1

Here as per the instruction given we are having output bit as 1 when there are two or more PC in use and a bit 1 shows that a PC is in use , as we have four PC the truth will be as below

PC1	PC2	PC3	PC4	Output
0	0	0	0	0
0	0	0	1	0
0	0	1	0	0
0	0	1	1	1
0	1	0	0	0
0	1	0	1	1
0	1	1	0	1
0	1	1	1	1
1	0	0	0	0
1	0	0	1	1
1	0	1	0	1
1	0	1	1	1
1	1	0	0	1
1	1	0	1	1
1	1	1	0	1
1	1	1	1	1