It is a circuitry equipment hardware that gives the computer additional functionality or electronic interface. It included a card which is built inside the computer to exchange information with microprocessor and other components of a machine.

There are many kinds of adapters such video, network card, NIC (Network Interface Card) etc. In computer programming, the adapter design pattern (often referred to as the wrapper pattern or simply a wrapper) is a design pattern for adapting one interface of a class into another interface that a client expects.

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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.