Explanation:
BIOS chips historically used EPROM or EEPROM (flash). EPROM is a type of non-volatile ROM. Among options, EPROM is non-volatile and used for firmware.
Explanation:
Secondary storage refers to non-volatile storage that is not directly accessible by the CPU, such as hard disks, SSDs, and optical discs. RAM and cache are primary storage; registers are internal to CPU.
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