Memory - functional unit where data is stored/retrieved, ROM - Memory where prerecorded information that cannot be modified or changed, Cache memory - Fast but expensive memory inside the CPU , RAM - volatile memory, Tracks - concentric rings around the disk surface, Sectors - fixed size segments of tracks, unit of retrieval, Registers - high-speed, dedicated memory inside of ALU, Data path - how information flows in the ALU, Control unit - fetches instructions from memory, decodes them, and executes them, Machine language - Instructions can be carried out by hardware, RISC - Small instruction sets, Easy to design hardware, CISC - Large instruction set, Complex to design hardware,

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