Centeral processing Unit (cpu) architecture, Assembly Language, Bit manipulation, System software



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Centeral processing Unit (CPU) architecture , Assembly Language, Bit manipulation , System software , system Hardware

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About CPU

  • central processing unit (CPU), also called a central processormain processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. This contrasts with external components such as main memory and I/O circuitry, specialized processors such as graphics processing units (GPUs).

Design CPU

  • The form, design, and implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory), decoding and execution of instructions by directing the coordinated operations of the ALU, registers and other components.

Design CPU

  • Most modern CPUs are implemented on integrated circuit (IC) microprocessors, with one or more CPUs on a single metal-oxide-semiconductor (MOS) IC chip. Microprocessors chips with multiple CPUs are multi-core processors. The individual physical CPUs, processor cores, can also be multithreaded to create additional virtual or logical CPUs.

Registers are parts of the CPU that can store data. They operate a little like RAM, but rather than use capacitor-based memory cells, the memory cells are only composed of logic gates. Registers can’t hold as much data as RAM can, but they operate considerably faster.

  • Registers are parts of the CPU that can store data. They operate a little like RAM, but rather than use capacitor-based memory cells, the memory cells are only composed of logic gates. Registers can’t hold as much data as RAM can, but they operate considerably faster.
  • There are five different types of register within the CPU. The table below gives you some basic details, and you will see how these registers operate in the next section.

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