Digital Electronics Quiz

The correction to be applied in decimal adder to the generated sum is

• (A) 0101
• (B) 0110
• (C) 1101
• (D) 1010

A full adder logic circuit will have

• A) Two inputs and one output.
• (B) Three inputs and three outputs.
• (C) Two inputs and two outputs.
• (D) Three inputs and two outputs.

If A and B are the inputs of a half adder, the carry is given by __________

• (A) A AND B
• (B) A OR B
• (C) A XOR B
• (D) A EX-NOR B

A device which converts BCD to Seven Segment is called

• (A) Encoder
• (B) Decoder
• (C) Multiplexer
• (D) Demultiplexer

How many select lines will a 16 to 1 multiplexer will have

• (A) 4
• (B) 3
• (C) 5
• (D) 1

The commercially available 8-input multiplexer integrated circuit in the TTL family is

• (A) 7495.
• (B) 74153.
• (C) 74154.
• (D) 74151.

What is a multiplexer?

• (A) It is a type of decoder which decodes several inputs and gives one output
• (B) A multiplexer is a device which converts many signals into one
• (C) It takes one input and results into many output
• (D) It is a type of encoder which decodes several inputs and gives one output

In the given 4-to-1 multiplexer, if c1 = 0 and c0 = 1 then the output M is ___________

• (A) X0
• (B) X1
• (C) X2
• (D) X3

If we record any music in any recorder, such types of process is called ___________

• (A) Multiplexing
• (B) Encoding
• (C) Decoding
• (D) Demultiplexing

How many outputs will a decimal-to-BCD encoder have?

• (A) 4
• (B) 8
• (C) 12
• (D) 16