LOGIC DIAGRAM OF 4 BIT FULL ADDER

4-bit parallel adder and 4-bit parallel subtractor
A 4-bit parallel subtractor is used to subtract a number consisting of 4 bits. This is done by cascading a series of full subtractors. For an n-bit parallel subtractor, n full subtractors can be cascaded to achieve the desired output. The connections are exactly the same as that of the 4-bit parallel adder which we saw earlier in this post.
Half Adder and Full Adder Circuit-Truth Table,Full Adder
Half Adder and Full Adder circuits is explained with their truth tables in this article. Design of Full Adder using Half Adder circuit is also shown. Single-bit Full Adder circuit and Multi-bit addition using Full Adder is also shown. Before going into this subject, it is very important to
Adder (electronics) - Wikipedia
A one-bit full-adder adds three one-bit numbers, often written as A, B, and C in; A and B are the operands, and C in is a bit carried in from the previous less-significant stage. The full adder is usually a component in a cascade of adders, which add 8, 16, 32, etc. bit binary numbers. The circuit produces a
digital logic - Designing a 4-bit Adder-Subtractor Circuit
I am designing a 4-bit adder-subtractor circuit using CMOS technology. The instructions I was given for the design portion are as follows: Given two 4-bit positive binary numbers A and B, you are to design an adder/subtractor circuit to compute (A+B) or (A-B), depending