Processor
Processing Equipment (Processing Device) Is a data processing tool – enter the data and displays the result to the output device. Processing tool consists of Central Processing Unit and Control Unit.
CPU (Central Processing Unit), The place where the program instructions are processed. At Micro Computer This tool is called a microprocessor. CPU consists of two main parts of the Control Unit and Arithmetic and Logical Unit (ALU) and several small deposits commonly called the Register.
Control Unit
This section served to regulate and control all existing equipment in the computer system. Control unit set when receive data input devices, when the data is processed and when the results displayed. Control unit translate instructions from computer programs, bringing data from input devices to the main memory and retrieve data from main memory to be processed. If there are calculations and logic instructions, the control unit sends data to the ALU. Results from processing the data carried by the Control Unit to the Main memory for storage again.
So the task of the Control Unit are:
1. Regulate and control the input devices and output.
2. Taking instructions from main memory.
3. Retrieve data from main memory when required by the process.
4. ALU instructions to send when there is calculation and logic, and oversees the work ALU.
5. Save the results to the main memory.
Arithmetic and Logical Unit. (ALU)
The main task of the ALU is to perform all the calculations that occur arithmetic accordance with the instructions of the program. ALU perform basic operations with arithmetic increase, while other operations such as arithmetic subtraction, multiplication, and division is done by adding base. ALU circuit so that the carrying out operations arithmetic called adder.
Another task is to make a decision of the logic operation with the instruction after the program.
Register
Register a small deposit which has a high speed, faster about 5 to 10 times compared with the speed of data retrieval in main memory. Register used to store instructions and data that are in the process by the CPU, while other data and instructions are waiting to be processed is stored in main memory. Register associated with the instruction being processed is instruction register and program counter.
Instruction Register used to store pending instruction. The program contains a collection of instructions, first time place in main memory. Processing program instructions carried out per the instructions. Instruction which turn to be processed, retrieved from main memory and stored in the instruction register. Program counter is a register that is used to store the address (address) of main memory location that contains the instructions that are processed. Registers associated with the data being processed purposes is general-purpose registers that have generally accommodate data are processed (called Operands registers) and to accommodate the results of processing (called the Accumulator). Important concepts that affect the speed of the processor is the size of the register.
Array Processor
Speaker array co-processor or processor is separate from the main processor. The function of the co-processor is to speed up processing time, by dividing the work of the main processor. The brain is a computer, consisting of the ALU.
