Digital Fundamentals (3130704) MCQs

MCQs of Fundamentals of Digital Systems and logic families

Showing 1 to 10 out of 12 Questions
1 2
1.

The highest decimal number that can be represented with 9 binary digits is

(a)

512
(b)

511
(c)

255
(d)

256
Answer:

Option (b)

2.

Perform 10111.101 + 110111.01 

(a)

1010110.11
(b)

1001110.111
(c)

1101010.101
(d)

1011101.101
Answer:

Option (b)

3.

Subtract (37)8 from (53)8.

(a)

-15
(b)

-16
(c)

16
(d)

14
Answer:

Option (d)

4.

Convert decimal number 675.625 to hexadecimal.

(a)

2A3.A
(b)

2A3.10
(c)

2103.10
(d)

2103.A
Answer:

Option (a)

5.

Convert binary number 110110010 to gray code.

(a)

101101101
(b)

10110010
(c)

11010101
(d)

101101011
Answer:

Option (d)

6.

Following is not invalid code in XS-3.

(a)

0010
(b)

1111
(c)

1011
(d)

1101
Answer:

Option (c)

7.

Convert XS-3 code 0101 0111 to BCD code.

(a)

0010 0100
(b)

1000 1010
(c)

0101 0111
(d)

0111 0101
Answer:

Option (a)

8.

De Morgan's theorem states that

(a)

(X+Y)' = X'+Y'
(b)

(X+Y)' = X + Y
(c)

(X+Y)' = X Y
(d)

(X+Y)' = X' Y'
Answer:

Option (d)

9.

The parity of the binary number 11011001 is?

(a)

even
(b)

not known
(c)

odd
(d)

same as the number of zeroes
Answer:

Option (c)

10.

1's complement of 1's complement of the binary number 10110011 is?

(a)

10110011
(b)

01001100
(c)

01001101
(d)

10110100
Answer:

Option (a)

Showing 1 to 10 out of 12 Questions
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