Computers, Equipment
Device of the system unit
Computing technology has long become a customary addition to household appliances. Almost every family now has a home laptop or computer. Press the power button, wait for the operating system to boot up and start
A person unfamiliar with computer technology, at first glance, it may seem that the device of the system unit of a personal computer is incredibly difficult. After all, sometimes the number of connected wires is so large that one can form a tourniquet thick with the hand of an adult. However, the device of the system unit only seems incredibly confusing. All computing modules of a personal computer are located in a metal case of a rectangular shape - a system unit (SB). The remaining devices, whose wires are connected to the SB, are peripheral, extending the main capabilities.
Look at the front panel, then remove the left side - it is usually
Is held from behind by two screws.
The main part of the computer is the motherboard (mainboard, main board). Outwardly it is the largest printed circuit board fixed inside the case along the entire side wall. On it connectors for connection of devices and various electronic elements are soldered. The motherboard is the basis that unites all the key components together. The device of the system unit is impossible without it.
The next component inside the SAT is a central microprocessor. Externally it looks like a large chip, mechanically fixed in the corresponding connector of the main board - hidden in the assembled system unit by the cooling radiator. Is an
"Brain" of the whole computer, it is the processor that performs all mathematical calculations.
It is impossible to describe the device of the system unit without mentioning the memory modules. They are the third key element of any computing system: the board, processor and memory are the minimum required. RAM, like the processor, is inserted into the connectors and held there by latches. The module externally represents a rectangular bar of a textolite with soldered microcircuits and two rows of sliding contacts.
A video card is displayed on the screen. It can be discrete (a separate board) and integrated into a chipset or processor. The wire from the monitor is connected to it.
The required voltage for all components is supplied by the switching power supply. Its main characteristic is the output power.
Additional devices include a network card that allows the computer to communicate with others; Sound adapter; A hard drive that saves data even when the power is turned off, etc.
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