What Does CPU Stand For ?
The Central Processing Unit is what the CPU stands for. It is the most important component of a computer. All the instructions that are sent from the Input Unit of the computer are processed by the CPU. After this, the required functions are carried out in the required manner and sent to the Output device.
The main components of the CPU are the Control Unit or the CU and the Arithmetic Logic Unit or ALU. The Control Unit controls or takes care of all functions taking place within the CPU and the computer.
The Arithmetic Logic Unit or ALU is the one which is responsible for carrying out all complex and varied calculations.
Apart from these components, the CPU also consists of many registers. These may perform very specific functions. Sometimes, the functions may also be very general in nature. Some of the Registers are Program Counter or PC, Instruction Decoder, Instruction Register or IR, Process Status Register and Accumulator or ACC. The Program Counter contains the address of the next operation which is to be performed; while the Instruction register contains the instruction that is being carried out at the moment. The Process Status Register carries information about operations done by the CPU and the Accumulator stores the final results of the calculations carried out inside the ALU. The General Registers that are present other than these carry information from the operations that are currently being processed inside the CPU.
Throughout history, there have been many innovations in the architecture and structure of the CPU which have finally given way to the modern day personal computer.
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