Updated: 05/02/2021 by Computer Hope

Add may refer to any of the following:

1. When referring to computers, add often refers to installing (adding) a hardware device or software program to the computer.


2. Alternatively referred to as addition, add is a math operation that takes two or more different numbers and outputs their total value. An example of addition is 10 + 4 = 14. On a computer, you can add numbers using a calculator or spreadsheet program and use the addition symbol (+).


The computer processor ALU (arithmetic logic unit) performs the add operation.

Addition operator

In many programming languages, the addition operator ( += ) can be used as a way to add to a previous value. For example, in the Perl code below, the $example variable is first set to a value of "2". The next line uses the addition operator to add "2" to the variable.

$example = 2;
$example += 2;
print "Total = $example";

When the script above is executed, the computer would print out "Total = 4" to the screen.

3. Add is an online gaming term to describe aggro.

Add-on, Aggro, ALU, Create, Divide, Game terms, Install, Multiply, Programming terms, Subtract