What is Binary adder?
'''Full adders''' are devices used to [[addition|add]] [[binary numeral system|binary number]]s. They are used in [[computer]]s. They take two binary numbers and put them together to get a [[sum]]. In its most basic form, it uses two [[XOR gate]]s, two [[AND gate]]s, and an [[OR gate]]. These gates figure out what the numbers being sent in mean and if the digit needs to be turned on or not. When solving this example: 1001 + 1100 (9 + 12 in decimal form), it would need five single bits to give an answer. The first digits in each number would go to one adder, 1 and 0. It would calculate that 1 + 0 = 1, so that first digit would be 1. The second digits from each are 0 and 0, and 0 + 0 = 0, so the second digit is 0. the third digit from each are 1 and 0, and 1 + 0 = 1, so the third digit is 1. The fourth digit in each are 1 and 1, and 1 + 1 = 10, but because this is a 2 digit number, it holds the first digit (0) and send the second digit to the next adder. The next adder sees 1, and 1 = 1, so the fifth digit is 1. If we take the sum digits in order, they come out as 10101 (21), so 1001 + 1100 = 10101 (9 + 12 = 21). {{math-stub}} [[Category:Mathematics]]