Digital Lab viva batch 2

What is the output of the carry in a half adder when both inputs are 0?

• 0

• 1

• Undefined

• 2

The half adder is primarily used to add how many bits?

• One

• Two

• Three

• Four

What is the logical representation of the sum output in a half adder?

• A XOR B

• A AND B

• A OR B

• NOT A

Which input condition produces a sum of 1 in a half adder?

• 00

• 01

• 10

• Both b and c

How many outputs does a half adder have?

• One

• Two

• Three

• Four

What is the output of the carry in a full adder when all inputs are 0?

• 0

• 1

• Undefined

• 2

What is the maximum carry output in a full adder?

• 0

• 1

• 2

• Undefined

How is the carry-out (Cout) in a full adder calculated?

• A XOR B

• A AND B OR Cin AND (A XOR B)

• A OR B

• A XOR B AND Cin

What is the sum output when inputs are 1, 0, and 1 in a full adder?

• 0

• 1

• Undefined

• 2

Which component can replace multiple full adders for n-bit addition?

• Decoder

• Multiplexer

• Ripple Carry Adder

• Demultiplexer