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DE quiz based on unit 1 & 2

Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

In positive logic the high voltage level of a digital signal is

a)

0

b)

1

c)

either 1 or 0

d)

none of these

2.

Which of the following is a weighted code

a)

Excess-3

b)

Gray code

c)

Hamming code

d)

BCD

3.

Even parity is used to make the number of 1's in the code (a)   .

4.

Hamming code is most useful code for the detection & correction of errors.

a)

True

b)

False

5.

The BCD code for 597 is

a)

0011 1001 0101

b)

0101 1001 0111

c)

0111 1000 0011

d)

0101 1011 0111

6.

The term in standard POS form is called

a)

Minterm

b)

don't care

c)

Maxterm

d)

literal

7.

The method of K map is not convenient to use for more than

a)

4 variables

b)

5 variables

c)

6 variables

d)

3 variables

8.

The term which cannot be combined further in a tabular method is called

a)

Essential prime implicant

b)

Implicant

c)

Prime implicants

d)

none of these

9.

Don't care condition is

a)

Logic 1

b)

Logic 0

c)

a function is to assume the value 1 for some combination & the value 0 for the other

d)

None of these

10.

The Quine Mc-Cluskey method of minimization of a logic expression ia an

a)

Algebraic method

b)

Tabular method

c)

A computer oriented algorithm

d)

graphical method