How to input to circuit, Computer Engineering

Q. How to input to circuit?

  • Register A bits as a0, a1, a2 and a3 in the corresponding X bits of the Full Adder (FA).
  • Register B bits as given in the Figure above as in the corresponding Y bits of FA.
  • Please consider every bit of register A and register B is fed to separate full adder unit.
  • Please also note that every one of the four inputs from A are applied to X inputs of binary adder and every of the four inputs from B are associated to the data inputs of multiplexers. It means that A input directly goes to adder though B input can be manipulated by the Multiplexer to create a number of different input values as shown in the figure above. B inputs through multiplexers are controlled by two selection lines S1 and S0. So using various combinations of S and S we can select data bits of B, complement of B, 0word, or word having All 1's.

The input carry Cin that can be equal to 0 or 1 goes to carry input of the full adder in least significant position. Other carries are cascaded from one phase to the subsequent.  Logically it is same as that of addition performed by us. We do pass carry of lower digits addition to higher digits. The output ofbinary adder is determined from the below arithmetic sum:


 D = X + Y + Cin


 D = A + Y + Cin


By controlling value of Y with the two selection lines S1and S0 and making Cin equal to 0 or 1 it's possible to implement eight arithmetic micro-operations listed in truth table.

485_How to input to circuit.png

Figure: Arithmetic Circuit Function Table

Posted Date: 7/27/2013 3:34:25 AM | Location : United States

Related Discussions:- How to input to circuit, Assignment Help, Ask Question on How to input to circuit, Get Answer, Expert's Help, How to input to circuit Discussions

Write discussion on How to input to circuit
Your posts are moderated
Related Questions
KK manufacturing company is faced with demand for its product in each of the next four periods as shown in Table 1.  It must decide upon a production schedule to meet these demands

Colour The use of colour is considered by many to be one of the most important areas in composition. Colours can be used in isolation or specific combinations to create partic

write an assembly language program for fibonacci series?

Explain the differences between macros and subroutines. Macros Vs Subroutines (i) Macros are pre-processor directives which are processed before the source program is pass

The Simple Object Access Protocol (SOAP) uses XML to describe a protocol for the exchange of information in distributed computing environments. SOAP having of three components: an

OLAP can process difficult queries and give the output in less than 0.1 seconds, for it to achieve like performance OLAP uses aggregations. Aggregations are built by aggregating an

Write an HTML program segment that contains hypertext links from one document to another . HTML permits any item to be placed as a hypertext reference. Therefore a single word

What is semaphores?  A semaphore 'S' is a synchronization tool which is an integer value that, apart from initialization, is accessed only by two standard atomic operations; wa

Q. What do you mean by shopping bots? ANSWER: A shopping bot or buyer agent is an intelligent agent on a Web site that assists you, the customer, search the products and servic

Write shorts notes on Remote Procedure Call (RPC) The facility whihc was created to help the programmers write client server software is termed as Remote Procedure Call. Within