# Parity Generators/Checkers – 1 MCQ’s

This set of Digital Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Parity Generators/Checkers – 1″.

1. How many inputs are required for a 1-of-16 decoder?

a) 2

b) 16

c) 8

d) 4

2. What control signals may be necessary to operate a 1-line-to-16 line decoder?

a) Flasher circuit control signal

b) A LOW on all gate enable inputs

c) Input from a hexadecimal counter

d) A HIGH on all gate enable circuits

3. How many inputs are required for a 1-of-10 BCD decoder?

a) 4

b) 8

c) 10

d) 2

4. How can the active condition (HIGH or LOW) or the decoder output be determined from the logic symbol?

a) A bubble indicates active-HIGH

b) A bubble indicates active-LOW

c) A triangle indicates active-HIGH

d) A triangle indicates active-LOW

5. How many possible outputs would a decoder have with a 6-bit binary input?

a) 32

b) 64

c) 128

d) 16

6. A truth table with output columns numbered 0–15 may be for which type of decoder IC?

a) Hexadecimal 1-of-16

b) Dual octal outputs

c) Binary-to-hexadecimal

d) Hexadecimal-to-binary

7. Which is the way to convert BCD to binary using the hardware approach?

a) By using MSI IC circuits

b) By using a keyboard encoder

c) By using an ALU

d) By using UART

8. How many outputs are present in a BCD decoder?

a) 4

b) 5

c) 15

d) 10

9. A BCD decoder will have how many rows in its truth table?

a) 10

b) 9

c) 8

d) 3

10. Which digital system translates coded characters into a more useful form?

a) Encoder

b) Display

c) Counter

d) Decoder

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