Basic Logic Gates Quiz

What is a multiplexer?

• A device that selects one of many inputs and sends it to a single output

• A device that stores data.

• A device that amplifies signals.

• A device that performs arithmetic operations.

What is the output of a 2-to-1 multiplexer when the select line is 0 ?

• It does not output anything.

• It outputs a random input.

• It outputs the second input.

• It outputs the first input.

A Full Adder circuit requires

• Two inputs and Two outputs

• Two inputs and three output

• Three inputs and two outputs

• Three inputs and one output

Full adder performs addition on

• 1 bit

• 2 bits

• 3 bits

• 4 bits

A full subtractor is a -------------- type of electronic circuit?

• Logical

• Sequential

• Combinational

• All the above

A full subtractor performs subtraction requires --- minimum of number of inputs?

• 1

• 2

• 3

• 4

A full subtractor is a combination of ------- components?

• Half adders

• Half subtractors

• Half multiplexers

• Full adders

When the inputs A, B, Bin is (0,0,1) then the Difference output of full subtractor is

• 0

• 1

• X

• None of the above

When the inputs A, B, Bin is (0,1,0) then the Borrow output of full subtractor is

• 1

• 0

• X

• None of the above

What distinguishes a Full Adder from a Half Adder?

• Full Adder can handle carry from previous additions

• Full Adder has two inputs and one output

• Full Adder can only add three binary numbers

• Full Adder only produces a sum bit