A computer chip with a read only memory that maintains its data when the power is turned off and that can be electronically erased and reprogrammed without being removed from the circuit board. Flash memory is non-volatile, which means that it stores information on a silicon chip in a way that does not need power to maintain the information in the chip. Meaning if you turn off the power to the chip, the information is retained without consuming any power. They are often used to hold control code such as the basic input/output system in a personal computer. Flash memory can be written in blocks, rather than bytes, making it easy to update.
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