Central processing unit, or CPU Also called processor (Processor) or chip (chip) counts as the most important of the hardware because it is responsible for processing user input through an input device based on a set of instructions or programs that the user wants to use. Central processing unit consists of 3 major parts. 1. the logical unit is a unit that served in various mathematical calculations, including subtract, multiply, divide. 2. the control unit is a unit that serves to coordinate and control the operation of the computer. Control device to receive data. Send the data to the memory. Contact with the display device to the order data from the memory to the display device. 3. main memory is the main memory that performs the actual processing of data based on the routine equipments. The result will be taken to the main memory, and the first to be brought out to show that the device display.The main work of the CPUBy the ring of the CPU's instruction contains basic steps 4 steps: 1. admission procedure (fatch)Initially the control unit receives a command code and data that are processed from the memory. 2. the process of decoding (decode)When the code comes in the CPU. The control unit decodes the commands and then send the data command to logical unit. 3. step (execute).Logical unit perform calculations using the data command decoder and know that to do? The CPU would then follow the instructions. 4. the process (store.)After the command, it will store the results in memory.
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