Table of Contents

## What is the expression for full subtractor?

The full subtractor is used to subtract three 1-bit numbers A, B, and C, which are minuend, subtrahend, and borrow, respectively. The full subtractor has three input states and two output states i.e., diff and borrow.

## What is the requirement of full subtractor circuit?

A full subtractor is a combinational circuit that performs subtraction of two bits, one is minuend and other is subtrahend, taking into account borrow of the previous adjacent lower minuend bit. This circuit has three inputs and two outputs.

**What are the applications of subtractor?**

Applications of Subtractor Circuit

- It is used in ALU (Arithmetic Logic Unit) and CPU (Central Processing Unit)
- They are widely used in electronic calculators and in devices like timers and program counters.
- They are also used in Digital Signal Processing.

**How do you write a truth table for a full subtractor?**

Full Subtractor Truth Table. This subtractor circuit executes a subtraction between two bits, which has 3- inputs (A, B, and Bin) and two outputs (D and Bout). Here the inputs indicate minuend, subtrahend, & previous borrow, whereas the two outputs are denoted as borrow o/p and difference.

### How many NAND gates are required for full subtractor?

4 Answers

Minimum Number of Gates: Nand/Nor | ||
---|---|---|

Exor | Full Subtractor | |

NAND | 4 | 9 |

NOR | 5 | 9 |

### What is the requirement of full subtractor circuit Mcq?

D. Explanation: a full subtractor has 3 input bits and two outputs bits borrow and difference.

**What is the application of full subtractor and half subtractor?**

Half Subtractor is used for the purpose of subtracting two single bit numbers. Half subtractors have no scope of taking into account “Borrow-in” from the previous circuit. To overcome this drawback, full subtractor comes into play.

**How many NAND gates are used in full adder?**

9 NAND gates

There are 9 NAND gates that are required for full adder.

## What is demultiplexer in DLD?

A demultiplexer (or demux) is a device that takes a single input line and routes it to one of several digital output lines. A demultiplexer of 2n outputs has n select lines, which are used to select which output line to send the input. A demultiplexer is also called a data distributor.

## What is multiplex and demultiplex?

Multiplexing is method or technique in which more than one signals are combined into one signal that travels on a medium. demultiplexing is the reverse of multiplexing, in which a multiplexed signal is decomposed in individual signals.