What are the main performance indicators of a computer?

The main performance indicators of the computer: word length, computing speed, main memory, external memory, hardware expansion capabilities.

1, word length

Computer processing at the same time a set of binary numbers known as a computer "word", and the number of bits of this set of binary numbers is "word length". All other things being equal, the larger the word length, the faster the computer can process the data.

2, computing speed

Computing speed is an important indicator of computer performance. Often referred to as computer computing speed (average computing speed), refers to the number of instructions that can be executed per second, generally used "million instructions / second" (mips, MillionInstructionPerSecond) to describe.

3, the main memory

Memory, also referred to as the main memory, is the CPU can be directly accessed memory, need to execute the program and need to deal with the data is stored in the main memory. The size of the internal memory reflects the computer's ability to store information instantly.

4, external memory

External memory capacity usually refers to the capacity of the hard disk (including internal hard disk and removable hard disk). The larger the external memory capacity, the more information can be stored, the more abundant the application software can be installed.

5, hardware expansion capacity

Parallel I / O is an operation that does not need to be forwarded, is issued by each process independently of the I / O request to get the corresponding data area, that is, more than one processor can be the same time on the **** enjoy the file or a different file for I / O access. Expanding parallel I/O capability means increasing the speed of parallel input and output of I/O devices.

Expanded Information

1, according to the performance indicators of the computer can be divided into high-performance computers, minicomputers, workstations, servers, embedded computers and so on.

2, the main application areas of computers: scientific and engineering computing, data processing, process control, computer-aided systems, artificial intelligence, information superhighway, virtual reality, multimedia technology.

3, the controller and the operator together to become the central processing unit CPU, CPU is the core of the computer hardware system.

4, the main memory is used to store the program instructions and data being executed, with fast access speed, can be directly exchanged with the CPU and other characteristics.

5, system software is used for internal management, maintenance, control and operation of computer systems, as well as computer program editing, translation and loading software. Including operating systems, language processing systems, database management systems and service programs.

6, service programs are divided into diagnostic programs, anti-virus programs, uninstall programs, backup programs, file compression programs.

Baidu Encyclopedia - Performance Indicators?