The history of the VGA Card
On a PC there are 3 components that are very important in terms of graphics performance, these components are the processor, memory, and VGA. VGA (Video Graphics Adapter) is the standard display analog computer. VGA can also be interpreted as a component of the duty to produce a visual of the computer and the hardware that gives command to the computer to display visual output that we can see.
VGA was first marketed in 1987 by the International Business Machines Corporation, abbreviated IBM. IBM is a U.S. company that manufactures or produces hardware and software. IBM was founded on July 15, 1911, and operate in 1888 with headquarters in Armonk, New York, and the United States.
Type VGA Based on its Slot
VGA type AGP VGA type AGP
VGA AGP beginning was made, due to the increase in the transfer of data from memory, the CPU to the display equipment, then made the AGP slot to install VGA type AGP. VGA AGP was launched based on the value of the voltage used is the AGP 1x and 2x with a voltage of 3.3 v, while the 4x and 8x are 1.5 volts.
VGA type PCI
Type VGA PCI, the VGA card can be used with how to install it in a PCI slot, VGA type is rarely used, because of limited features, the characteristics of the slot in the front there is a stain, and pin straight vertical.
PCI Express
The type of VGA, the further development of the PCI slot has an incredible ability, with the name of the PCI Express, designed to install the latest equipment, 2 version of the PCI Express slot is a PCI Express 1 x and 16 x, PCI Express 16x is used specifically to install VGA type PCI Express, and 1x for the purposes of installation of additional equipment.
Physical traits of the type VGA PCI express is the view from the shape that has the opposite of the form of the PCI usual.
How to Work the VGA Card
When the application is running to create the image, the app will ask for help from the graphics card driver. Graphics drivers listen to the instructions, either from the OS or from the app, then pick up the digital data that is needed and converts it into a format that is understandable by the graphics card.
After that, the driver sends data to the new digital formatted to the graphics card to render. Incoming Data to the VGA card through the slot on the motherboard (AGP/PCI-E)
After channeled to the graphics card, the data will be sent to the memory of the graphics card as a temporary storage. Then the GPU will take digital data and converts it into pixels.
At this point, the pixels are not yet ready to be displayed on the screen. The pixel will be sent back to the Video RAM for storage. VRAM is connected directly to the digital-to-analog converter (DAC). The converter is also commonly called a RAMDAC who were tasked with translating the image into an analog signal that can be used by the monitor. Furthermore, the RAMDAC send the final image to the monitor through a cable.
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