GRAPHICS CARD

The graphics card is inserted into the expansion slot on the motherboard (usually PCI-E slot, there were AGP , PCI , ISA and other slots before). It is mainly responsible for converting the display signal sent by the host to the display into a general electrical signal, so that the display can understand what the personal computer is making it do. The graphics card is mainly composed of graphics card motherboard, display chip, display memory, radiator (heat sink, fan) and other parts. The main chip card is called " graphics chips " (Video chipset, also called GPU or the VPU , visual graphics processor or processors), the main processing unit graphics. The graphics card also has a memory similar to the computer memory , called "display memory", or video memory for short . 

Early graphics cards were purely graphics cards, which only played the role of signal conversion; the graphics cards we generally use have 3D graphics calculations and graphics acceleration functions, so they are also called "graphics acceleration cards" or " 3D acceleration cards ." The earliest graphics cards on the PC were the MDA and CGA 2D accelerator cards that were installed on the 5150 personal computer launched by IBM in 1981 . 

Graphics card is usually composed of bus interface, PCB board , display chip, video memory, RAMDAC , VGA BIOS , VGA function pins, D-sub socket and other peripheral components. Most graphics cards also have VGA , DVI display interface or HDMI interface and S-Video Terminal and Display Port interface. video card