What:

A Digital Circuits designed to add (Computer) Bit together. They’re designed in such a way so they can be strung together to add a full binary (32bit/64bit) numbers.

FA Truth Table:

A (Input 1)B (Input 2)Cin (Carry In)Sum (S)Carry Out (Cout)
00000
01010
10010
11001
00110
01101
10101
11111

Data Overflow:

If the last full adder has a carry-out of 1, many ALU’s will simply set a flag in a registry saying something has gone wrong. Otherwise, it may just continue on as normal, causing the error to propagate onwards.

Full Adder Diagram