GATE Computer Science (CS) 2022 Shift 1 Solved Paper

Question : 39 of 65

Marks: +1, -0

Consider a digital display system (DDS) shown in the figure that displays the contents of register X. A 16-bit code word is used to load a word in X, either from S or from R. S is a 1024-word memory segment and R is a 32-word register file. Based on the value of mode bit M, T selects an input word to load in X. P and Q interface with the corresponding bits in the code word to choose the addressed word. Which one of the following represents the functionality of P, Q, and T?

P is 10 : 1 multiplexer; Q is 5 : 1 multiplexer; T is 2 : 1 multiplexer
P is 10 : 2¹⁰ decoder; Q is 5 : 2⁵ decoder; T is 2 : 1 encoder
P is 10 : 2¹⁰ decoder; Q is 5 : 2⁵ decoder; T is 2 : 1 multiplexer
P is 1 : 10 de-multiplexer; Q is 1 : 5 de-multiplexer; T is 2 : 1 multiplexer

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