Digital Logic Building Block

Question 1

a circuit that subtracts three bits: two input bits and a borrow bit from the previous lower significant position.

Answer 1

Full Subtractor

Question 2

are digital circuits where the output depends only on the current inputs, not previous states

Answer 2

Combinational Circuits

Question 3

a device that selects one of several inputs and forwards the selected input to a single output.

Answer 3

Multiplexer (MUX)

Question 4

a circuit that subtracts two bits and gives two outputs: Difference and Borrow.

Answer 4

Half Subtractor

Question 5

a device that converts a binary input code into a one-hot output (only one output is active)

Answer 5

Decoders

Question 6

a device that converts multiple inputs into a coded binary output

Answer 6

Encoders

Question 7

a device that takes a single input and routes it to one of several outputs.

Answer 7

Demultiplexers

Question 8

a circuit that adds two single-bit binary numbers and gives two outputs: Sum and Carry.

Answer 8

Half Adder

Question 9

a circuit that adds three bits: two input bits and one carry bit from the previous lower significant position.

Answer 9

Full Adders