The main performance indicators of the computer hardware system are: CPU, which determines the performance of the laptop; word length, which is the number of binary data bits that the CPU can directly process; operation speed, which refers to the number of times the computer can perform per second The number of instructions; capacity, which measures the performance of a memory; frequency, which refers to the clock frequency of the computer.
The main performance indicators are as follows:
1. CPU
The CPU determines the laptop The most important factor in performance, computer computing speed refers to the number of instructions that the computer can execute per second, that is, the average number of "runs" of the central processor per unit time.
2. Word length
The word length is the number of binary data bits that the CPU can directly process. It is directly related to the calculation accuracy, function and speed of the computer. The longer the word length, the stronger the processing power. Common microcomputer word lengths are 8 bits, 16 bits and 32 bits.
3. Operation speed
The operation speed refers to the number of instructions that the computer can execute per second, generally in MIPS.
4. Capacity
One of the factors that measures the performance of a memory is its capacity. Currently, the standard memory capacity of notebook computers is usually 2GB or 4GB.
5. Main frequency
The main frequency refers to the clock frequency of the computer, expressed in MHz.
Extended information
The computer system consists of two major parts: hardware and software. The composition of hardware: input devices, output devices, memory, arithmetic units, and controllers; the composition of software: the collective name for programs and related documentation.
The hardware system is mainly composed of central processing unit, memory, input and output control system and various external devices. Software is divided into system software, support software and application software.
The computer system is characterized by its ability to carry out accurate and fast calculations and judgments, its versatility, its ease of use, and its ability to be connected into a network.
1. Calculation: Almost all complex calculations can be realized by computers through arithmetic operations and logical operations.
2. Judgment: Computers have the ability to distinguish different situations and choose different processes, so they can be used in management, control, confrontation, decision-making, reasoning and other fields.
3. Storage: Computers can store huge amounts of information.
4. Accuracy: As long as the word length is sufficient, the calculation accuracy is theoretically unlimited.
5. Fast: The time required for a computer operation has been as small as nanoseconds.
6. Universal: Computers are programmable, and different programs can implement different applications.
7. Easy to use: Rich high-performance software and intelligent human-machine interface greatly facilitate use.
8. Networking: Multiple computer systems can transcend geographical boundaries and share remote information and software resources with the help of communication networks.
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