Digital Systems Quiz

What is the term used to describe the 0-1 combinations that can be stored in a register?

• State or content of the register

• Frequency of the register

• Amplitude of the register

• Phase of the register

Which signal must be maintained at logic 1 during normal clocked operation of a four-bit register?

• Clear_b

• R input

• Clock input

• Data input

When are all bits of a register loaded simultaneously with a common clock pulse?

• When loading is done serially.

• When loading is done asynchronously.

• When loading is done in parallel.

• When loading is done with a reset signal.

Which of the following best describes the primary function of a shift register?

• To store data bitwise, shifting bits with each clock pulse

• To perform arithmetic operations on binary numbers

• To amplify analog signals

• To convert analog signals to digital signals

What is the role of the serial input in a shift register?

• It determines what goes into the leftmost flip-flop during the shift

• It controls the clock signal for the register

• It amplifies the output signal

• It stores the output of the rightmost flip-flop

What are the three main connections in a Serial-in to Serial-out (SISO) shift register?

• Serial input, serial output, clock signal

• Parallel input, parallel output, clock signal

• Data input, data output, enable signal

• Load input, shift output, reset signal

What is a register called that can move data in both left and right directions?

• Bi-directional register

• Uni-directional register

• Parallel register

• Serial register

For parallel loading operation in a universal shift register, to which logic level is the mode control input connected?

• Logic 0

• Logic 1

• Ground

• Floating

What is the main function of a shift register in a serial adder circuit?

• To store binary numbers for serial addition

• To multiply binary numbers

• To convert binary numbers to decimal

• To generate clock pulses

Why is it possible to use one register for storing both augend and sum bits in a serial adder?

• Because the bits of A are shifted out during addition

• Because the register can multiply numbers

• Because the register can store decimal numbers

• Because the register is used for clock generation