# Binary Coded Decimal(BCD) MCQ’s

This set of Digital Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Binary Coded Decimal(BCD)”.

1. The decimal number 10 is represented in its BCD form as __________

a) 10100000

b) 01010111

c) 00010000

d) 00101011

2. Add the two BCD numbers: 1001 + 0100 = ?

a) 10101111

b) 01010000

c) 00010011

d) 00101011

3. Binary coded decimal is a combination of __________

a) Two binary digits

b) Three binary digits

c) Four binary digits

d) Five binary digits

4. Carry out BCD subtraction for (68) – (61) using 10’s complement method.

a) 00000111

b) 01110000

c) 100000111

d) 011111000

5. When numbers, letters or words are represented by a special group of symbols, this process is called __________

a) Decoding

b) Encoding

c) Digitizing

d) Inverting

6. How many bits would be required to encode decimal numbers 0 to 9999 in straight binary codes?

a) 12

b) 14

c) 16

d) 18

7. Code is a symbolic representation of __________ information.

a) Continuous

b) Discrete

c) Analog

d) Both continuous and discrete

8. A three digit decimal number requires ________ for representation in the conventional BCD format.

a) 3 bits

b) 6 bits

c) 12 bits

d) 24 bits

9. The excess-3 code for 597 is given by __________

a) 100011001010

b) 100010100111

c) 010110010111

d) 010110101101

10. The decimal equivalent of the excess-3 number 110010100011.01110101 is _____________

a) 970.42

b) 1253.75

c) 861.75

d) 1132.87

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