Implement Full Adder using 1:8 DEMUX | Number System and Code | Digital Circuit Design in EXTC

TL;DR

This video explains how to design a full adder using a 1-to-8 demultiplexer.

Transcript

click the bell icon to get latest videos from akira hello friends we will see the design of full adder using one is to aid the multiplexer let's start the discussion your caution is implement full adder using one is 2 8 d bucks so here you have to focus on what full adder you should know the basic definition of full adder full adder is used to add ... Read More

Key Insights

• 🫦 A full adder is a circuit used for binary addition of three single binary bits, producing sum and carry outputs.
• 🍹 The truth table for a full adder helps determine the values for the sum and carry outputs for all possible input combinations.
• 🫥 A 1-to-8 demultiplexer can be used to implement the circuit for a full adder, with the inputs acting as select lines for the demultiplexer.
• 🤑 The expressions for sum and carry are obtained by identifying the ones and their corresponding input terms from the truth table.
• 🍹 Separate OR gates are used to realize the circuit for the sum and carry outputs.
• 🔠 The 1-to-8 demultiplexer has one input, an enabled terminal connected to logic one, and eight outputs.
• 🫥 The select lines for the demultiplexer are determined by the inputs of the full adder.

Questions & Answers

Q: What is the purpose of a full adder?

A full adder is used to add three single binary bits, producing two outputs (sum and carry).

Q: How can a truth table be used to design a full adder?

By creating a truth table that considers all possible input combinations, the values for the sum and carry outputs can be determined through binary addition.

Q: What is the role of a 1-to-8 demultiplexer in the design?

The 1-to-8 demultiplexer is used to implement the full adder circuit. It has one input, an enabled terminal (connected to logic one), and eight outputs.

Q: How are the sum and carry expressions obtained?

The expressions for sum and carry are obtained by collecting the ones and their corresponding input terms from the truth table.

Summary & Key Takeaways

• The video discusses the process of implementing a full adder using a 1-to-8 demultiplexer.

• It explains the truth table for the full adder and demonstrates how to obtain the values for the sum and carry outputs.

• The video then shows how to use a 1-to-8 demultiplexer to realize the circuit diagram for the full adder.