An identify comparator is defined as a digital comparator which has ____________

• A) Two output terminals
• B) Three output terminals
• C) Only one output terminal
• D) No output terminals

Convert the Gray code 1011 to binary.

• A) 0111
• B) 1010
• C) 1011
• D) 1101

To create a Johnson Counter by using D-flip flops, how flip flops should be connected together?

• A) Q' output of previous flip flop should be connected to clock input of second flip flop
• B) Q output of previous flip flop should be connected to D input of second flip flop
• C) Q' output of previous flip flop should be connected to D input of second flip flop
• D) Q output of previous flip flop should be connected to clock input of second flip flop

How many flop flops are required to create a counter circuit which can count from 0 to 7?

• A) 2
• B) 4
• C) 1
• D) 3

Three decade counter would have ____________

• A) 5 BCD counters
• B) 4 BCD counters
• C) 3 BCD counters
• D) 2 BCD counters

The parallel outputs of a counter circuit represent the _____________

• A) Parallel data word
• B) Clock count
• C) Clock frequency
• D) Counter modulus

A decimal counter has ______ states.

• A) 9
• B) 2
• C) 10
• D) 7

A counter circuit is usually constructed of ____________

• A) A number of NOR gates connected in cascade form
• B) A number of NAND gates connected in cascade form
• C) A number of flip-flops connected in cascade
• D) A number of latches connected in cascade form

Ripple counters are also called ____________

• A) VLSI counters
• B) SSI counters
• C) Asynchronous counters
• D) Synchronous counters

How many select lines would be required for an 8x1 multiplexer?

• A) 8
• B) 2
• C) 1
• D) 3

In 8x1 multiplexer, which one of the following lines must always be connected to ground in order to activate the mutiplexer?

• A) Vcc
• B) G'
• C) W
• D) Y

What is the maximum possible range of bit-count specifically in n-bit binary counter consisting of ‘n’ number of flip-flops?

• A) 0 to 2n+1
• B) 0 to 2n
• C) 0 to 2n + 1
• D) 0 to 2n – 1

Why do we use Gray Code?

• A) Error Detection
• B) Invert the code
• C) Error Correction
• D) To count the number or bit changes

A Karnaugh map (K-map) is an abstract form of ____________ diagram organized as a matrix of squares.

• A) Venn Diagram
• B) Triangular Diagram
• C) Block diagram
• D) Cycle Diagram

Convert the Gray code 1011 to binary.

• A) 1011
• B) 1010
• C) 0111
• D) 1101

A full adder circuit takes ______________ bit(s) as input and returns ____________ bit(s) as output.

• A) 2, 2
• B) 3, 1
• C) 3, 2
• D) 2, 1

The K-map based Boolean reduction is based on the following Unifying Theorem: A + A’ = 1.

• A) Non Impact
• B) Force
• C) Complementarity
• D) Impact

Which of the following is the modified code of Excess-3 code?

• A) Gray Code
• B) ASCII
• C) EBDIC
• D) BCD

Reflected Binary Code is also known as _______ code.

• A) Excess-3
• B) Gray Code
• C) BCD
• D) ASCII

It should be kept in mind that don’t care terms should be used along with the terms that are present in ___________.

• A) Expressions
• B) Minterms
• C) Latches
• D) K-Map