Design a 4-to-2 encoder using 2-to-1 encoder modules. Hint: You also need a 1-bit, 2-to-1 MUX and a two-input OR gate. Design an 8-to-3 encoder using 4-to-2 encoder modules. Hint: You also need a...

Design a 4-to-2 encoder using 2-to-1 encoder modules. Hint: You also need a 1-bit, 2-to-1 MUX and a two-input OR gate. Design an 8-to-3 encoder using 4-to-2 encoder modules. Hint: You also need a 2-bit, 2-to-1 MUX and a two-input OR gate. Design the 8-bit bit-serial ALU shown in Fig. 3.23 and use the truth table given in Table 3.8 for the 1-bit ALU slice.