5-BIT PARALLEL ADDER
Abstract:
Ø The use of one half-adder
or one full-adder alone is good for add two binary numbers with a length of one
bit each.
Ø But what happens when we
want to add two binary numbers with a longer length?
Ø So, there are many ways
to do this. The fastest and easy way by far is to use the Ripple Carry Adder or
Parallel Binary Adder.
Ø Parallel Binary Adder
uses one half-adder along with one or more full adders depends on the length of
the two binary numbers that are to be added.
Ø It is also called as “Ripple
Carry Adder”.
You can understand it easy by following block diagram.
Block Diagram:
Circuit Diagram:
Truth table for half adder:
Truth table for full adder:
Software implementation using “Virtual Digital Simulator”:
Inputs are "10110" and
"11011"
Output (sum) is "110001"
Cout is "1"
c0, c1, c2, c3 are 0,1,1,1 relatively
ICs used in the project:
OR GATE IC: 74LS32
AND GATE IC: 74LS08
XOR GATE IC: 74LS86
