about the CPU and Memory diagram

about the CPU and Memory diagram - register program counter...

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the central processing unit and main memory The Development and Basic Organization of Computers
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based on stored program design processor system CPU memory input/output system input/output devices secondary storage Electronic Digital Computers
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manages the instruction-execution cycle FETCH – DECODE – EXECUTE coordinates the activities of other devices Central Processing Unit
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(fast access) storage device for preserving binary data and instructions memory is divided into units or words each is usually a standard size or fixed-length each memory word has a unique address for random access Main Memory
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Random Access Memory (RAM) readable writable usually volatile (e.g., Dynamic RAM or DRAM) general storage Read Only Memory (ROM) readable permanent nonvolatile special-purpose storage for data and instructions Main Memory
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The CPU and Main Memory
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Inside the CPU
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Inside the CPU memory address register
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Inside the CPU memory address register memory data register
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Inside the CPU memory address
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Unformatted text preview: register program counter memory data register Inside the CPU memory address register memory data register instruction register program counter Inside the CPU memory address register memory data register instruction register program counter arithmetic logic unit Inside the CPU accumulator (work register) memory data register arithmetic logic unit program counter instruction register memory address register Inside the CPU accumul ator (work register) memory data register arithmetic logic unit program counter instruction register memory address register system clock FETCH the instruction 1. address of the next instruction is transferred from PC to MAR 2. the instruction is located in memory FETCH the instruction 3. instruction is copied from memory to MDR DECODE the instruction instruction is transferred to and decoded in the IR EXECUTE the instruction control unit sends signals to appropriate devices to cause execution of the instruction...
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about the CPU and Memory diagram - register program counter...

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