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Firmware is a software program or set of instructions programmed on a Hardware device. It provides the necessary instructions for how the device communicates with the other computer Hardware. But how can software be programmed onto Hardware? Good question. Firmware is typically stored in the flash ROM of a Hardware device. While ROM is read-only memory, flash ROM can be erased and rewritten because it is actually a type of flash memory.
Firmware can be thought of as semi-permanent since it remains the same unless it is updated by a firmware updater. You may need to update the firmware of certain devices, such as hard drives and video cards in order for them to work with a new operating system. CD and DVD drive manufacturers often make firmware updates available that allow the drives to read faster media. Sometimes manufacturers release firmware updates that simply make their devices work more efficiently.
You can usually find firmware updates by going to the Support or Downloads area of a manufacturers website. Keeping your firmware up-to-date is often not necessary, but it is still a good idea. Just make sure that once you start a firmware updater, you let the update finish, because most devices will not function if their firmware is not recognized.
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