An important indicator that determines the performance of a microprocessor is the main frequency.The main frequency is also called the clock frequency, and the unit is Hz, which is used to indicate the computing speed of the CPU. The main frequency of the CPU indicates the oscillation speed of the digital pulse signal in the CPU. There is a certain relationship between the main frequency and the actual computing speed.
Microprocessor is a central processing unit composed of one or a few large-scale integrated circuits. These circuits perform the functions of control components and arithmetic logic components.
The microprocessor can complete operations such as fetching instructions, executing instructions, and exchanging information with external memory and logic components. It is the computing control part of the microcomputer. It can be combined with memory and peripheral circuit chips to form a microcomputer.
Compared with traditional central processing units, microprocessors have the advantages of small size, light weight and easy modularization. The basic components of a microprocessor are: register file, arithmetic unit, timing control circuit, and data and address bus.
The main technical parameters of the CPU are as follows:
⑴, the number of binary data bits that the CPU can process simultaneously, that is, the word length;
⑵, clock frequency;
⑶, the capacity and speed of the cache memory (Cache);
⑷, the width of the address bus and data bus;
⑸, manufacturing process.
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