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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