(Solved): 1. What is multiplexer? Explain. 2. Design a \( 3 \times 8 \) decoder. 3.5 PROCEDURE 1. Implement t ...

1. What is multiplexer? Explain. 2. Design a \( 3 \times 8 \) decoder. 3.5 PROCEDURE 1. Implement the same function using 8-to-1 MUX. Choose to connect A, B, and C to the select lines of the MUX, then we need to feed the MUX inputs with values that are function of D. (Feed 16 th pin of MUX with \( 5 \mathrm{~V} \) and connect 8 th pin to the ground.) 2. Draw the circuit to your report Figure \( 3.3 \) 3. How do we realize \( 2 \mathrm{X} 4 \) decoder with logic gates? Use the truth table in Figure 3.3. 4. Realize \( f(A, B)=\sum(0,2,3) \) with \( 2 \times 4 \) Decoder. (Feed 16 th pin of the Decoder with \( 5 \mathrm{~V} \) and connect 8 th pin to the ground). 151 8-TO-1 LINE DATA SELECTORS/MULTIPLEXERS FUNCTION TABLE Figure \( 3.4 \) 74151 is a 8 line-to-1 line multiplexer. It has the schematic representation shown in Figure 3.5. Selection lines \( \mathrm{S} 2, \mathrm{~S} 1 \) and \( \mathrm{S} 0 \) select the particular input to be multiplexed and applied to the output. Strobe \( \mathrm{S} \) acts as an enable signal. If strobe \( =1,74151 \) is disabled and output \( y=0 \). If strobe \( =0,74151 \) is enabled and functions as a multiplexer. Table \( 3.1 \) shows the multiplex function of 74151 in terms of select lines. Table \( 3.1 \) Figure \( 3.5 \mathrm{IC} \) type 74151 Multiplexer \( 8 \times 1 \) U Uivivenify EE242 Digital Systems Laboratory nant of Electrical and Flocuesics Finginceriag 3