What is the primary function of a register in digital electronics?
A
To perform arithmetic operations B
To store multiple bits of data C
To compare binary numbers D
To generate clock pulses
Analysis & Theory
Registers are used to store multiple bits of data temporarily.
What type of register shifts the data to the left or right on clock pulses?
A
Bidirectional Register B
Shift Register C
Up Counter D
Accumulator
Analysis & Theory
Shift registers move (shift) the stored data left or right with each clock pulse.
Which register is used for arithmetic and logic operations?
A
Shift Register B
Counter C
Accumulator D
Program Counter
Analysis & Theory
The Accumulator stores intermediate results of arithmetic and logic operations.
What does an asynchronous counter mean?
A
All flip-flops are triggered by the same clock B
Each flip-flop is triggered by the output of the previous one C
Counter counts randomly D
Counter operates only once
Analysis & Theory
In asynchronous (ripple) counters, each flip-flop is clocked by the output of the previous one.
What is the modulus of a 3-bit binary counter?
A
3 B
6 C
7 D
8
Analysis & Theory
A 3-bit counter counts from 0 to 7, which is 8 different states. So, modulus = 8.
What type of counter counts in a binary decreasing order?
A
Up Counter B
Down Counter C
Ring Counter D
Ripple Counter
Analysis & Theory
A down counter counts in reverse binary order (e.g., 111 → 110 → 101...).
What is a ring counter?
A
A type of asynchronous counter B
A shift register with feedback from the last flip-flop to the first C
A register used for counting D
A counter that counts in Gray code
Analysis & Theory
A ring counter is a type of shift register where the output of the last flip-flop is connected to the input of the first.
Which of the following is a type of synchronous counter?
A
Ripple counter B
Asynchronous counter C
Johnson counter D
Random counter
Analysis & Theory
Johnson counter is a type of synchronous counter where all flip-flops are clocked together.