Memory cannot maintain itself without power. Memory is a feedback circuit with transistors, which require power. No power, no feedback, no memory. DRAM is a bit different, but basically it's the same concept.
ROM isn't actually memory. It is purely feedforward. Much like the "instinct" of an animal. If you know anything about hardware, ROM is a combinatorial collection of logical gates.
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ROM isn't actually memory. It is purely feedforward. Much like the "instinct" of an animal. If you know anything about hardware, ROM is a combinatorial collection of logical gates.