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LILYGO VGA32 Module CH9102F PS/2 Mouse and Keyboard Controller Board for Graphics Library Game Engine/VT Terminal
Description:
- VGA: Video Graphics Array. The main function of VGA is to transmit real-time video images processed by computer graphics cards to a monitor for display. The VGA interface adopts a fifteen pin D-type interface, divided into three rows of five each. The interfaces are divided into male and female heads, numbered from left to right for male heads and from right to left for female heads.
Three major advantages of PS/2 interface:
PS/2 Full Key Conflict Free:
- PS/2 supports true full key no punch. What does that mean? Simply put, the system can recognize as many keys as you press on the keyboard at once. For the USB keyboard, it is relatively lacking. Although some USB keyboards also claim to have this feature, they are generally made of signal simulation.
PS/2 has lower latency:
- The working principle of the device naturally varies depending on the interface.
- USB runs by polling devices. For example, why does your computer ask for your mouse keys? The mouse button will respond by saying, move left. Similar to this question and answer approach.
- PS/2 sends interrupt requests through the system. The mouse button on PS/2 will actively interrupt the current activity of the CPU and then tell the computer what to do. Compared to USB, PS/2 has lower latency and faster response time in practical use.
PS/2 has better compatibility:
- The current Win7 system is still loved by many players. During the installation process of the native Win7 system, there was no integrated USB driver, which resulted in the USB mouse key not functioning properly. The mouse keys of PS/2 are not restricted. Although some may seem to be able to use USB mice, the simulation effect is really average, and there is a noticeable delay.
More Details:
- https://github.com/LilyGO/FabGL
Package Included:
- 1 x Controller Board
