1.

A serial in/parallel out, 4-bit shift register initially contains all 1s. The data nibble 0111 is waiting to enter. After four clock pulses, the register contains ________(a) 0000(b) 1111(c) 0111(d) 1000The question was asked during a job interview.My question is based upon Shift Registers in portion Registers of Digital Circuits

Answer»

Right option is (c) 0111

For explanation: In Serial-In/Parallel-Out shift register, data will be SHIFTED all at a TIME with every clock pulse. THEREFORE,

Wait | Store

0111 | 0000

011 | 1000 1st clk

01 | 1100 2nd clk

0 | 1110 3RD clk

X | 1111 4th clk.



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