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

Define process of instruction execution, Instruction execution is performed...

Instruction execution is performed in CPU registers. Although before we define process of instruction execution let's first give details on Registers (temporary storage location in

What is tcas, tCAS is the number of clock cycles required to access a parti...

tCAS is the number of clock cycles required to access a particular column of data in SDRAM. CAS latency is the column address strobe time, sometimes referred to as tCL.

Networking, how to connect a home network

how to connect a home network

Explain pass-1 algorithm of passes used in two-pass-assemble, Explain pass-...

Explain pass-1 algorithm of passes used in two-pass assembler? Pass I: (i) Separate the symbol, operand fields and mnemonic opcode (ii) Make the symbol table (iii)

Isoquants, what are the types of isoquants

what are the types of isoquants

Offset litho duplicating of information, Offset Litho Duplicating Equi...

Offset Litho Duplicating Equipment Required Duplicator Plate-making equipment (not always, essential), e.g. printing box and processing unit Plates Paper Ink

Microcomputer - controlled breadmaking machine, Q. Microcomputer - Controll...

Q. Microcomputer - Controlled Breadmaking Machine? Figure shows a simplified schematic diagram of a microcomputer-controlled breadmaking machine. A microcomputer along with its

What are set up time and hold time constraints, What are set up time and ho...

What are set up time and hold time constraints? What do they mean? Which one is crucial for establishing maximum clock frequency of a circuit? Set up time is the amount of time

Error handling in hard disk, Error handling in Hard disk in computer archit...

Error handling in Hard disk in computer architecture : Modern drives also make widespread use of Error Correcting Codes (ECCs), specifically Reed-Solomon error correction.

Equivalences & rewrite rules - artificial intelligence, Equivalences & Rewr...

Equivalences & Rewrite Rules - artificial intelligence: Along with allowing us to verify trivial theorems, tautologies make us able to establish that definite sentences are say

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