1. An arithmetic logic unit (ALL) is the center of a central processing unit CPU). It performers a set of arithmetic and logical micro operations on two input buses at every rising edge of CLK input signal. An active high RST input is used to synchronously reset the output signal Y to logical zeros. The output Y must be available at every rising edge of CLK und the latencies for all functions is I cycle. Inputs of ALU: CLK, RST, 8-bit unsigned A, 8-bit unsigned B, 4-bit unsigned SEL Output of ALU: 8-bit unsigned Y Function Function table of ALU is given below: Function SEL Operation Number ] 0000 YA 2 0001 YS=A+B 3 0010 Y