The specific work division of each component of the computer

When we buy an assembly machine, we need to equip every necessary part of the computer to form a complete computer. Maybe each of us can tell which hardware we have. But we know the role of every component in the computer.

When we buy an assembly machine, we need to equip every necessary part of the computer to form a complete computer. Maybe each of us can tell which hardware we have. But we know the role of each component in the computer, in fact, the parts are in cooperation. Here's a look at what each hardware does in the computer.

First, the graphics

Also known as display graphics adapter, graphics are now 3d graphics accelerator card. It is the interface card that connects the host to the display. Its function is to convert the output information of the host into information such as characters, graphics and colors, and transmit them to the display. The display card is inserted in the ISA, PCI, and AGP expansion slots of the motherboard, and the isa display card is now basically eliminated. There are also some motherboards that are integrated graphics.

Second, the physical interface card
computer network cable, some integrated on the motherboard

NIC Some are externally inserted into the computer expansion slot. Each NIC is designed to face a specific network, such as Ethernet, Token Ring, FDDI, Arcnet, and so on.

Third, the external memory

external memory is typically a magnetic or optical media, like hard disks, floppy disks, magnetic tape, optical disk, It can store information for a long time and does not rely on electricity to store information, but it is driven by mechanical components, and its speed is much slower than memory.

Hard Drive is an external memory using a magnetic recording information. The bank is a disk coated with magnetic material on both sides, and the disk substrate is a hard aluminum alloy, so it is called a hard disk. After the hard disk is powered on, the disk rotates all the time, so the CPU does not need to start time when accessing the hard disk, and the access speed is fast; the capacity is large, and the data transmission rate is also high; when the disk is accessed, the magnetic head does not directly contact the disk surface, the friction is small, and the speed is increased. And reduce wear. The hard disk is a kind of precision equipment. Don't vibrate and collide strongly. Do not shut down immediately after turning on the machine within 30 seconds. Prevent the static electricity from damaging the hard disk when touching the hard disk. The hard disk can provide us with daily storage of documents and programs, and there is no loss of power loss. With the continuous development of various programs and functions, the capacity of our hard disks is constantly increasing.

IV memory

Memory (Ram), also known as random access memory, refers to the storing means on the motherboard, the CPU Communicate directly with it, and use its data storage components to store the data and programs currently in use. Its physical essence is one or more sets of integrated circuits with data input and output and data storage functions. The memory is only used for temporary storage. Programs and data, once the power is turned off or a power outage occurs, the programs and data are lost. In general, all applications must run in the ram, so the size of the ram can affect the speed of the program. RAM also has a notable feature, that is, the information stored in it will only be saved in the boot state. If the machine is turned off, then all the information that is not saved on the hard disk or floppy disk will be lost, the next time. No previous information is left in memory when the machine is started.

five, CPU

CPU Chinese name of the central processor. As the core of the PC, the CPU is responsible for the coordination, control and program operation of the entire PC system. With the technological revolution of large-scale integrated circuits, the processor core has already assembled millions of transistors and is a very sophisticated system. Usually, the instructions issued by the PC, including the analog signals input by the external device, are converted into digital signals by the digital-to-analog conversion device and sent to the control unit for control distribution. The arithmetic unit performs arithmetic processing, including storage and exchange of the registered unit data. The resulting data is passed back to the application, and we end up seeing the results on the output device.

VI motherboard

basic computer motherboard is one of the most important member. The main circuit system that constitutes the computer is installed on the main board, and generally has a BIOS chip, an I/O control chip, a keyboard and a panel control switch interface, a light indicator connector, an expansion slot, a DC power supply connector of the motherboard and the card, and the like. element. Another feature of the motherboard is the use of an open architecture. There are 6-8 expansion slots on the motherboard for the control card of the PC peripheral device. By replacing these cards, the corresponding subsystems of the microcomputer can be locally upgraded, allowing manufacturers and users to have greater flexibility in configuring models. In short, the motherboard plays a renewed role in the entire microcomputer system. It can be said that the type and grade of the motherboard determine the type and grade of the entire microcomputer system, and the performance of the motherboard affects the performance of the entire microcomputer system.

seven sound

means our computer sound card to make a sound, a sound card can play midi music, because it has The function of music synthesis. An important indicator of sound card---music synthesis, there are two kinds of frequency modulation synthesis method and wave table synthesis method. Early sound cards used FM synthesis, which has a low-pitched sound and poor sound quality, but at a low price. The hardware wavetable synthesis method is a new pronunciation method. This method is simple and reliable. It can easily upgrade the sound card without wave table function, but the CPU usage is large, and cpu processing and bus transmission are required.