1000+ Digital-electronics Questions - Set 50 [With Solutions]

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1000+ Digital-electronics Questions - Set 50 [With Solutions]

Digital-electronics Questions Set 50:

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Digital-electronics Questions

Set 50/60

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The number of distinct Boolean expressions with 3 variables is

3

256

1024

128

What is the octal equivalent of (1110100.0100111)₂?

164.234

614.243

461.432

64.34

An INHIBIT gate is a type of _____ gate with an inhibiting input.

OR

EX-OR

AND

NOT

Find the 8's complement of the number (361)₈.

418 base 8

417 base 8

361 base 8

362 base 8

How many JK flip-flops are required to construct a BCD (Binary Coded Decimal) counter?

3

4

5

2

Which of the following logic gates cannot be used to realize a circuit in AOI (AND-OR-INVERT) form?

NAND

AND

XOR

NOR

A sequence 1011 is applied to a Ring counter. What is the sequence observed in the 10th clock cycle?

1111

1101

1010

1110

What is the function of the TTL 74LS85 IC?

1-bit digital comparator

4-bit magnitude comparator

8-bit magnitude comparator

8-bit word comparator

In a 3-bit asynchronous down counter, at the first negative transition of the clock, the counter content becomes __________

<p style="user-select: auto;">111</p>

<p style="user-select: auto;">000</p>

<p style="user-select: auto;">101</p>

<p style="user-select: auto;">010</p>

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

<p style="user-select: auto;"><span style="color: rgb(58, 58, 58); user-select: auto;">0 to 2</span><sup style="color: rgb(58, 58, 58);">n</sup></p>

<p style="user-select: auto;"><span style="color: rgb(58, 58, 58); user-select: auto;"> 0 to 2</span><sup style="color: rgb(58, 58, 58);">n</sup><span style="color: rgb(58, 58, 58); user-select: auto;"> + 1</span></p>

<p style="user-select: auto;"><span style="color: rgb(58, 58, 58); user-select: auto;">0 to 2</span><sup style="color: rgb(58, 58, 58);">n</sup><span style="color: rgb(58, 58, 58); user-select: auto;"> – 1</span></p>

<p style="user-select: auto;"><span style="color: rgb(58, 58, 58); user-select: auto;">0 to 2</span><sup style="color: rgb(58, 58, 58);">n+1/2</sup></p>

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