CPUs and Registers
TL; DR · CPU architecture defines how instructions are executed: o CISC = complex but fewer instructions o RISC = simple but more instructions · Processor bitness (16-bit, 32-bit, 64-bit, etc.) depends on the size of registersand memory addresses, not the instruction length. · Registers are the CPU’s fastest memory: o General-Purpose Registers store operands, intermediate results, and memory addresses for computations. o Instruction
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