What is Full Adder ?| Learn under 5 min | Adder circuit | Digital Circuit | DE.19

The video begins with a thank you to viewers and a recap of the half adder circuit. It introduces the full adder circuit, explaining its ability to add carry bits from previous additions. The full adder has three inputs (A, B, CI) and two outputs (S, CO). The truth table is discussed, showing when outputs are high. Boolean equations for outputs are derived using K maps. The video explains how to build a full adder circuit using XOR, AND, and OR gates, but notes that integrated circuits are available. It concludes with a call to share the video and subscribe for more content.

What is the main limitation of a half adder that a full adder addresses?

• It is slower than a full adder.

• It requires more power to operate.

• It cannot handle carry bits from previous additions.

• It cannot add two bits together.

How many input and output bits does a full adder circuit have?

• Three inputs and two outputs

• Two inputs and two outputs

• Two inputs and one output

• Three inputs and one output

In a full adder, when is the sum output high?

• When all inputs are high

• When there is an even number of high inputs

• When there is an odd number of high inputs

• When all inputs are low

Which logic gates are used to build a full adder circuit?

• NAND, NOR, XOR

• XOR, AND, OR

• AND, NOR, XOR

• AND, OR, NOT

What is a practical alternative to building a full adder circuit from scratch?

• Using a full adder integrated circuit

• Using a half adder circuit

• Using a microcontroller

• Using a programmable logic array