An Add-On is like an application program which adds additional functions and improves the ability of a program to work in the effective way by increasing the performance of inserted add-on utility. The term add-in is often used instead of add-on for chips you add to a board that is already installed in a computer. In contrast, add-on almost always refers to an entire circuit board.

Developers and programmers can easily extend the functions by add-on insertion.
For example, Mozilla Firefox is a famous web browser which supports add-ons like the Google toolbar ad blockers and web developer tools.


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Christopher Latham Sholes (February 14, 1819 – February 17, 1890) was an American inventor who invented the QWERTY keyboard and along with Frank Haven Hall, Samuel W. Soule, Carlos Gladden and John Pratt, has been contended as one of the …

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