Shift Registers Questions and Answers
Shift Registers are sequential logic circuits used for data storage and transfer in digital systems. This topic includes digital electronics aptitude questions and answers on serial-in serial-out, parallel-in parallel-out, and bidirectional shift registers. These questions, frequently asked in GATE, DRDO, and ISRO exams, test your conceptual clarity and circuit understanding. Practice these Shift Registers questions with answers to enhance your digital electronics knowledge and improve your competitive exam readiness.
Shift Registers
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69 questions
41. What is the function of a buffer circuit?
- to provide an output that is inverted from that on the input
- to provide an output that is equal to its input
- to clean up the input
- to clean up the output
42. What is the preset condition for a ring shift counter?
- all FFs set to 1
- all FFs cleared to 0
- a single 0, the rest 1
- a single 1, the rest 0
43. Which is not characteristic of a shift register?
- Serial in/parallel in
- Serial in/parallel out
- Parallel in/serial out
- Parallel in/parallel out
44. To keep output data accurate, 4-bit series-in, parallel-out shift registers employ a ________.
- divide-by-4 clock pulse
- sequence generator
- strobe line
- multiplexer
45. Another way to connect devices to a shared data bus is to use a ________.
- circulating gate
- transceiver
- bidirectional encoder
- strobed latch
46. To serially shift a nibble (four bits) of data into a shift register, there must be ________.
- one clock pulse
- four clock pulses
- eight clock pulses
- one clock pulse for each 1 in the data
47. Computers operate on data internally in a ________ format.
- tristate
- universal
- parallel
- serial
48. In a 4-bit Johnson counter sequence there are a total of how many states, or bit patterns?
- 1
- 2
- 4
- 8
49. If a 10-bit ring counter has an initial state 1101000000, what is the state after the second clock pulse?
- 1101000000
- 0011010000
- 1100000000
- 0000000000
50. How much storage capacity does each stage in a shift register represent?
- One bit
- Two bits
- Four bits (one nibble)
- Eight bits