Description
Central Processing Unit (CPU) is a large scale integrated circuit, is a computer computing Core (Core) and Control Unit (Control Unit). Its main function is to interpret computer instructions and process data in computer software. The central processing Unit (CPU) mainly consists of ArithmeTIc (arithmetic Logic unit, ALU, ArithmeTIc Logic Unit) and Cache (Cache) and the Data, control, and state Bus (Bus) connecting them. It, together with internal Memory (Memory) and input/output (I/O) devices, is called the three core components of electronic computers. The basic structure of the CPU From the functional point of view, the internal structure of the general CPU can be divided into three parts: control unit, logical operation unit, storage unit (including internal bus and buffer). The control unit completes the deployment work in the whole process of data processing, the logical unit completes each instruction to get the final desired result of the program, and the storage unit is responsible for storing the original data and the result of the operation. The integrated cooperation makes the CPU have powerful functions, which can complete many complex operations including floating point, multimedia and other instructions, and also add more vitality to the digital era.
How the CPU works:
Control unit: The control unit is the command and control center of the whole CPU, consisting of InstrucTIon Register IR (InstrucTIon Register), instruction Decoder ID (InstrucTIon Decoder) and OperaTIon Controller OC (OperaTIon Controller), etc. It is very important to coordinate the whole computer to work in order. According to the user's pre-programmed program, it takes out each instruction from the memory in turn, puts it in the instruction register IR, determines what operation should be carried out through instruction decoding (analysis), and then sends a microoperation control signal to the corresponding component by operating the controller OC, according to the determined timing. The operation controller OC mainly includes the control logic of beat pulse generator, control matrix, clock pulse generator, reset circuit and power off circuit.
Arithmetic unit: is the core of the arithmetic machine. You can perform arithmetic operations (including basic operations such as addition and subtraction multipliers and their additional operations) and logical operations (including shifts, logic tests, or comparisons between two values). Relative to the control unit, the arithmetic device accepts the command of the control unit and acts, that is, all the operations carried out by the arithmetic unit are commanded by the control signal issued by the control unit, so it is the executive part.
Memory unit: including CPU on-chip cache and register group, is the temporary storage of data in the CPU, which stores the data waiting for processing, or has been processed data, the CPU to access the register time is shorter than the time to access memory. The use of registers can reduce the number of times the CPU accesses the memory, thus improving the working speed of the CPU. However, due to the limited chip area and integration degree, the capacity of the register group cannot be very large. The register group can be divided into special register and general register. The function of the special register is fixed, respectively storing the corresponding data. General purpose registers are versatile and can be specified by the programmer, and the number of general purpose registers varies from microprocessor to microprocessor.
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The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers
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