1. Draw the multiple-level NOR circuit for the following expression

The procedure in the design of multilevel circuits:

1. Convert all AND gates to NAND gates with AND-invert graphic symbols.

2. Convert all OR gates to NAND gates with invert-OR graphic symbols.

3. Check all the bubbles in the diagram.

1) F = BC(D + C)A + (BC' + DE') + BD

2) F=(A+B+C+D)(A+B+C+E)(A+B+C+F)

2. Draw the multiple-level NAND circuit for the following expression:

Multilevel NAND Circuits The procedure in the design of multilevel circuits: 1. Convert all AND gates to NAND gates with AND-invert graphic symbols. 2. Convert all OR gates to NAND gates with invert-OR graphic symbols. 3. Check all the bubbles in the diagram.

1) F = w(x + y + z) + xyz

2) WXYZ+VXYZ+UXYZ

.......

Drawing in the same way as the picture

Dag F C Da D- Mixed Notation for NAND Gate