For an 4-bit parallel adder, there must be 4 full adder circuits. A ripple carry adder is a logic circuit in which the carry-out of each full adder is the carry-in of the succeeding next most ...

Learn how to use logic gates and circuit diagrams to create a simple calculator that can perform addition and subtraction with four-bit numbers.

A GaAs depletion-mode MESFET integrated circuit which is implemented with buffered FET logic and contains 155 gates is described. The chip is composed of a 4-bit adder, a 4-bit register, and lookahead ...

ABSTRACT:- In this paper design of 4-Bit ripple carry adder is proposed using a CMOS full adder cell. Multiple full adder circuits can be cascaded in parallel to add an N-bit number .For N-bit ...