An adder half or full adder is a digital circuit that
performs addition of digital numbers. In digital computers and
other kinds of processors adders are mainly used in the
arithmetic logic units or ALU. They are also utilized in other
parts of the processor, where they are used to calculate
addresses, table index, and increment and decrement operators
in memories, and similar operations with respect to CPU design.
Much type of adders i.e. although adders can be constructed for
many number representations, such as binary-coded decimal or
excess-3, the most common adders operates on binary numbers.
In cases where two's complement or ones' complement is being
used to represent negative numbers, it is trivial to modify an
adder into an adder– subtractor. Other signed number
representations require more logic around the basic adder.
A method proposed later than this study is to design carry
look ahead adders using SCMOS technology, also analyze the
effect of various parameters on the characteristics of adders,
using 300 nm or 50 nm, spice model for CMOS technology.
Real Time Impact Factor:
Pending
Author Name: Farhan Siddiqui, Ayoush Johari
URL: View PDF
Keywords: Adders, half adders, full adders, CLA circuits, computer architecture.
ISSN: 2394-9007
EISSN: 0000-0000
EOI/DOI: Volume-V, Number-III, April 20
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