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用英文刻画计算机五大年夜部件的功用

2020-05-21 | 人围观

  Five major hardware computer hardware generally refers to: the motherboard, CPU, memory, hard disk, graphics cards. These five pieces directly affect the performance of the computer.

  1, the main board. Motherboard is a platform for the work of the various parts of the computer, it is closely connected to the various parts of the computer together, the various components through the motherboard for data transmission. That is to say, the computer is an important transportation hub in the motherboard, the stability of its work affects the stability of the whole machine.

  2, CPU. CPU is the central processing unit, which is the core and the control core of a computer. Its function is mainly to explain the computer instructions and the data processing computer software. CPU consists of an arithmetic unit, a controller, a register, a cache, and the data, control, and the state of the connection between the data, the control, and the status of the bus. As the core of the whole system, CPU is the highest executive unit of the whole system, so CPU has become the core component of the computer performance, many users have to judge the grade of the computer as a standard.

  3, memory. Memory is also called internal memory or random access memory (RAM), divided into DDR SDRAM and SDRAM memory, but SDRAM because of low capacity, slow storage speed, poor stability, has been out of the DDR) memory belonging to the electronic storage device, which is composed of a circuit board and chip, is characterized by small size, speed, electricity can be saved, empty without electricity, that is, the computer is in the boot state memory can store data, after the shutdown will be all of the data is automatically cleared. Ram has DDR, II DDR, III DDR three categories, capacity 1-64GB.

  4, hard disk. Hard disk belongs to external memory, mechanical hard disk is made by the metal disk, and magnetic sheets are memory function, so storage to disk on data, whether in the boot or shutdown, all is not lost. Hard capacity is very large, has reached TB level, the size of 3.5, 2.5, 1.8, 1 inches, the interface has IDE, SATA, SCSI, SATA, the most common. Mobile hard disk is a hard disk as a storage medium, emphasizing the portability of storage products. On the market the vast majority of mobile hard disk is a standard hard drive based, and only a small part is to micro drive (1.8 Inch hard disk, etc.) as the foundation, but price factors determines the mainstream mobile hard disk or standard laptop hard drive based. Because the hard disk is used as a storage medium, the reading and writing mode of the data of the mobile hard disk is the same as the standard IDE hard disk. Mobile hard disk with USB, IEEE1394, and other fast transmission speed interface, can be high speed and system data transmission. A hard disk, composed of a control unit and a memory unit (FLASH chip), is a solid state electronic memory chip. Solid state hard disk in the product appearance and size are completely consistent with the general hard disk but the solid hard disk faster than the mechanical hard drive.

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