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Digital-electronics Questions Set 92:

Quiz Mode

In an 8:1 multiplexer, how many select lines are there?

Solution:

While converting D-flip flop to T flip flop, D=_______.

Qn+T

Qn⨁T

Solution:

What is the overall modulus of a cascade of 3 identical mod-6 counters?

216

Solution:

The minimum number of 2:1 multiplexers required to realize a 4:1 multiplexer is:

Solution:

Which of the following numbers is represented correctly in the Base-7 number system?

465.789

345.678

234.567

123.456

Solution:

The code where all successive numbers differ from their preceding number by a single bit is called

Alphanumeric Code

BCD

Excess 3

Gray

Solution:

The code used in digital systems to represent decimal digits, letters, and other special characters such as +, -, ., *, etc. is

hexadecimal

octal

natural BCD

ASCII

Solution:

Which one of the following memory types is volatile in nature?

ROM (Read-Only Memory)

EROM (Erasable Read-Only Memory)

PROM (Programmable Read-Only Memory)

RAM (Random Access Memory)

Solution:

The switching function of f(A,B,C,D) = Σ m(5,9,11,14) can be written as

None of these

A'BC'D + AB'C'D + AB'CD + ABCD'

A'B'C'D + AB'C'D + A'B'CD + ABCD'

A'BC'D + A'BC'D' + AB'CD' + ABCD

Solution:

Given a 2:1 multiplexer whose input (I0) is the output of a NAND gate (with inputs A and B), and the input (I1) is the output of an inverter (with input A), what is the output of the 2:1 multiplexer when the select line is S?

AS + BS + A'S'

S(A+B)' + S'A

S(A+B)' + S'A'

S(A AND B)' + S'A'

Digital-electronics Questions Set 92:

In an 8:1 multiplexer, how many select lines are there?

Solution:

While converting D-flip flop to T flip flop, D=_______.

Solution:

What is the overall modulus of a cascade of 3 identical mod-6 counters?

Solution:

The minimum number of 2:1 multiplexers required to realize a 4:1 multiplexer is:

Solution:

Which of the following numbers is represented correctly in the Base-7 number system?

Solution:

The code where all successive numbers differ from their preceding number by a single bit is called

Solution:

The code used in digital systems to represent decimal digits, letters, and other special characters such as +, -, ., *, etc. is

Solution:

Which one of the following memory types is volatile in nature?

Solution:

The switching function of f(A,B,C,D) = Σ m(5,9,11,14) can be written as

Solution:

Given a 2:1 multiplexer whose input (I0) is the output of a NAND gate (with inputs A and B), and the input (I1) is the output of an inverter (with input A), what is the output of the 2:1 multiplexer when the select line is S?

Solution:

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