Explain a full subtractor using half subtractors, Computer Engineering

Assignment Help:

Draw the logic diagram of a full subtractor using half subtractors and explain its working with the help of a truth table

Ans:

Full Subtractor: It has to take care of repeated borrow by the next higher bit. At some stage along with the two bits (one of that is to be subtracted from another) is the other input Bin, that is, borrow bit from the Di and borrow Bo. Table illustrates the truth table.

455_Block Diagram of Full Subtractor.png

Fig.(a) Block Diagram of Full Subtractor

233_Block Diagram of Full Subtractor as Combination of two Half.png

Fig.(b) Block Diagram of Full Subtractor as Combination of two Half Subtractors and OR Gate

2099_Logic Diagram of Full Subtractor.png

Fig.(c) Logic Diagram of Full Subtractor

Fig.(a) demonstrates a block diagram for a full subtractor. This can be constructed from two Half Subtractors and an OR gate as demonstrated in Fig.(b). The logic diagram is demonstrated in Fig.(c). This logic diagram is according the truth table.

 

Inputs

 

Outputs

 

A

B

Bin

Di

BO

0

0

0

0

0

0

0

1

1

1

0

1

0

1

1

0

1

1

0

1

1

0

0

1

0

1

0

1

0

0

1

1

0

0

0

1

1

1

1

1

Truth Table for Full Subtractor


Related Discussions:- Explain a full subtractor using half subtractors

What is ternary association, What is ternary association Associations c...

What is ternary association Associations can be binary, ternary, or have higher order. In use, the vast majority of it is binary or ternary associations. Except a ternary assoc

What is race condition, What is Race condition? Race condition: The c...

What is Race condition? Race condition: The circumstances where several processes access - and manipulate shared data-concurrently. The last value of the shared data depends

What is capacitor-based keyboards, Q. What is Capacitor-Based Keyboards? ...

Q. What is Capacitor-Based Keyboards? These keyboards are based on the idea of Capacitance. A simple capacitor comprises a pair of conductive plates having opposite charges and

Find 9''s complement for decimal number, Q. Find 9's complement for decimal...

Q. Find 9's complement for decimal number? The 9's complement is achieved by subtracting every digit of number from 9 (the highest digit value). Let's assume that we want to si

A sorting algorithm is stable, A sorting algorithm is stable if  Preser...

A sorting algorithm is stable if  Preserves the original order of records with equivalent keys.

Define a technique of temporarily removing inactive program, is a technique...

is a technique of temporarily removing inactive programs from the memory of computer system? Swapping is a technique of temporarily eliminating inactive programs from the memor

Introduction to computers, explain classification of computers in detail.al...

explain classification of computers in detail.also explain various application areas of computers

Temporary location, Compare zero-, one, two-, and three- address machines b...

Compare zero-, one, two-, and three- address machines by writing programs to compute                         X = (A + B x C)/(D - E x F) for every of the four machines.  Do n

Explain frequency division multiplexing, Explain FDM and show how CCITT sta...

Explain FDM and show how CCITT standards help in building the base band? Frequency Division Multiplexing: This is the process of combining some information channels through s

What is script-fu in gimp, Sript-Fu is the first GIMP scripting extension. ...

Sript-Fu is the first GIMP scripting extension. Extensions are split processes that communicate with the GIMP in the similar way that plug-ins do. The distinction is that extension

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd