Combinational Circuit

In combinational circuits, the output is only dependent on present inputs. This is in contrast with Sequential Circuits.

Arithmetic Circuits

Arithmetic Circuits are circuits used for performing operations such as addition, subtraction, multiplication, etc. of binary numbers.

Binary Half-Adder Circuit

Addition is taking two bits, adding them, producing a sum and a carry out.

Binary Full-Adders

Full adders do the same function of addition but with -bit numbers. We need to add a carry in signal.

Implementation of Binary Full-Adders

Ripple Adder

Carry Look-Ahead Adder

Ripple adders are very slow for large numbers of bits. We can figure out a way to calculate carry ins faster.