Show how to build a 3x8 decoder using 2x4 decoders (in addition to other gates) a. Draw the logic diagram b Simulate the circuit on Logisim using 7400 chips only. Double click on the chip on Logisim to see the internal design. Show how to build 8x1 multiplexer using 4x1 multiplexers a. Draw the logic diagram b. Simulate the circuit on Logisim using 7400 chips only. Double click on the chip on Logisim to see the internal design