FOUR-BIT X FOUR-BIT MULTIPLIER (SINGLE CELL)

Pictured is a CMOS cell that will be used for the 4-bit x 4-bit multiplier circuit. The cell contains 1 'and' gate and 1 full adder. The inputs are a, b, carry-in, and sum-in. The output for each cell is sum-out and carry-out. This cell will be copied 16 times to form a 4 x 4 cellular array.