2x2 multiplier

This is a two-bit by two-bit multiplier derived by converting the input-to-output mapping into a combinational circuit. Product Bit 3 (P3): P3 = Mpcd1 * Mpcd0 * Mplr1 * Mplr0 Product Bit 2 (P2): P2 = Mpcd1 * Mplr1 * /( Mpcd0 * Mplr0) Product Bit 1 (P1): P1 = (Mpcd1 * Mplr1) * [ Mpcd0 (+) Mplr0 ] + Mpcd1 * /Mplr1 * Mplr0 + /Mpcd1 * Mplr1 * Mpcd0 Product Bit 0 (0): P0 = Mpcd0 * Mplr0