There are many technical indicators of computers, but what should be the most important?

There are many technical indicators of computers, and the most important ones should be: main frequency, word length and storage capacity, and computing speed. The main frequency refers to the clock frequency of the CPU core; the word length refers to the number of registers in the computer; the storage capacity refers to the ability of the memory to store binary information; the operating speed refers to the number of instructions that can be executed per second.

Electronic computer technical indicators are reference data used to evaluate computer performance and select and use computers. The technical indicators of electronic computers mainly include the following:

(1) Word length

refers to the number of bits in the register in the computer. The longer the word length, the larger the range of represented numbers, that is, the more significant digits there are, the higher the calculation accuracy. Therefore, word length is an indicator of the computational accuracy of electronic computers. Depending on the machine, the word length is 8-bit, 16-bit, 32-bit, 48-bit, 64-bit, etc. Generally, the word length of large and medium-sized computers is 32-64 bits, and the word length of small computers and microcomputers is 8-32 bits.

(2) Operation speed

Operation speed is an important indicator of computer performance. The commonly referred to computer computing speed (average computing speed) refers to the number of instructions that can be executed per second, which is generally described as "million instructions/second" (mips, MillionInstructionPerSecond). The same computer may take different times to perform different operations, so different methods are often used to describe the operation speed. Commonly used ones include CPU clock frequency (clock frequency), average number of instructions executed per second (ips), etc. Microcomputers generally use the main frequency to describe the computing speed. For example, the main frequency of Pentium/133 is 133 MHz, the main frequency of Pentium III/800 is 800 MHz, and the main frequency of Pentium 41.5G is 1.5 GHz. Generally speaking, the higher the main frequency, the faster the computing speed.

(3) Storage capacity

refers to the number of numbers or instructions that the memory can store, that is, the ability of the memory to store binary information. It is represented by the product of the storage unit and the number of bits (word length) of each unit, and the unit is bit (a binary number is 1 bit) or byte. 8 bits are represented by 1 byte, and 1024 bytes are represented by 1K bytes. The memory capacity of giant or large computers is generally about 2-10 megabytes, the memory capacity of medium and small computers is about tens of K to 1 megabyte, and the memory capacity of microcomputers is 4K-64K bytes. (4) Access cycle. Refers to the time required for a complete access operation of the memory. The access cycle determines the computing speed of the computer to a large extent. The shorter it is, the better. The access cycle of magnetic core memory is from a few tenths of a microsecond to several microseconds, and the access cycle of semiconductor memory is from a hundred nanoseconds to several hundred nanoseconds.

(4) Main frequency

The main frequency of the CPU is the clock frequency at which the CPU core works. What is usually said is the MHz of a certain CPU, and this MHz is the "main frequency of the CPU".

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