1. A common chip is a 4-bit adder. Four of these chips can be hooked up to form a 16-bit adder. Explain how and draw the resulting block diagram for 16-bit adder by composing o4-bit Adder 2. Draw truth table for a (2-to-1) Mux and a (2-to- 4) Decoder What are the minimum and maximum signed integer numbers (in decimal) that can be represented in 2's complement with 8 bits. 3