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Worksheets

Digital Electronics Lab

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which are the UNIVERSAL GATES?

a)

XOR Gate & NOT Gate

b)

AND Gate & OR Gate

c)

NAND Gate & NOR Gate

d)

All of the above

2.

In the case of OR gate,no matter what the no. of inputs a

a)

1 at any input causes the output to be at logic 1

b)

1 at any input causes the output to be at logic 0

c)

0 any input causes the output to be at logic 0

d)

0 at any input causes the output to be at logic 1.

3.

The inverter is....................

a)

NAND Gate

b)

XOR Gate

c)

AND Gate

d)

NOT Gate

4.

The NOR Gate is OR Gate followed by ...............

a)

OR Gate

b)

NOT Gate

c)

AND Gate

d)

None of the above

5.

NAND Gate is called a universal logic element, because

a)

It is used by everybody

b)

Any logic function can be realised by NAND Gate alone

c)

Many digital computers use NAND Gate

d)

All the minimisation techniques are applicable to optimum NAND Gate realisation

6.

Which is the correct order of sequence for representing input values in K-map?

a)

(00,01,10,11)

b)

(00,10,01,11)

c)

(00,01,11,10)

d)

(00,10,11,01)

7.

The inputs of a NAND Gate are connected together. The resulting circuit is .............

a)

AND Gate

b)

OR Gate

c)

NOT Gate

d)

None of the above

8.

The only function of NOT Gate is to ....................

a)

Stop signal

b)

Invert input signal

c)

Act as universal gate

d)

All of the above

9.

To realise a stair case wiring (i.e, one lamp controlled by two switches), which of the following gate is useful?

a)

NOR Gate

b)

XOR Gate

c)

AND Gate

d)

NAND Gate

10.

Convert binary number 1011 to gray code

a)

1101

b)

1110

c)

1111

d)

1100