BIOS instructs the computer on how to preform basic functions such as booting and keyboard control. It is also used to identify and configure the hardware in a computer
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Typically, "Del" stands for "delete."
Most times, this key will do different things depending on the type of keyboard/computer you have. For example, on macs, the "delete" key is also the backspace key, so it will delete the last character you typed. However, on most pcs, the "delete" key will delete characters you typed that are in front of your cursor.
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