Adders and subtractors, Other Engineering

Adders & Subtractors

Adder and Subtractor circuits are used to perform basic calculations in computer systems. Adders, as their name suggests, add binary digits. Since binary numbers consist of only two digits, 1 and 0, it is almost always necessary to carry a digit to the next higher-order column when adding. For example 1 + 1 = 0 carry 1. There are always 3 inputs into a full adder; the 2 digits being added and the carry from the adjacent lower order column (A, B & CI). Figure 15 shows the circuit for a "Full-adder" function.


Full-Adder Circuit

Subtractor circuits are again a combination of basic gates with the inputs A, B and BRI. BRI is the borrowed digit from the subtraction in the adjacent lower-order column (if applicable). The outputs are D, the difference between the digits in the subtraction, and BRO, the digit borrowed from the adjacent higher-order column (if applicable).




Posted Date: 9/13/2012 9:30:37 AM | Location : United States

Related Discussions:- Adders and subtractors, Assignment Help, Ask Question on Adders and subtractors, Get Answer, Expert's Help, Adders and subtractors Discussions

Write discussion on Adders and subtractors
Your posts are moderated
Related Questions
Ten projects only agricultural engineer will have say

do u do embedded system assignment?

Q. A. Microfinance case How would you value the price of a Microfinance Institution? Using data available on the net, explain what would you consider the value of SKS (India) or Co

how to find points on Ts diagram?

External cooling Cooling of the external skin of an aero-engine is achieved by suitable design of the aircraft airframe; the layout will depend upon where the engine is fitted

Q. Define elastic and plastic deformation and differentiate between them. Ans. Elastic deformation : Elastic deformation is that part of the deformed material, when the

i want to take your kelp in writing the research paper, which can be published in reputed international journal.

simplify using k-map f=sum(0,4,5,6,9,10,12)+d(1,15)