ESP32 TTGO VGA32 V1.4 controller PS/2 mouse keyboard controller graphics library game engine/VT terminal

GitHub link: 
https://github.com/LilyGO/FabGL

VGA usage example:

VGA: Video Graphics Array. The main function of VGA is to transmit the video images processed by the computer graphics card to the monitor for display in real time. The VGA interface adopts a 15-pin D-type interface, divided into three rows, five in each row. The interfaces are divided into male and female. The numbering sequence is male from left to right, and female from right to left.

Three advantages of PS/2 interface

One, PS/2 full key without conflict

PS/2 supports true full key no punch. What does that mean? Simply put, as many keys as you press on the keyboard at one time, the system can recognize as many keys. For the Usb keyboard, it is lacking. Although some Usb keyboards also claim to have this function, they are generally made by signal simulation.

2. PS/2 latency is lower

The working principle of the device is naturally different for different interfaces.

USB is operated by polling the device. For example: your computer asks what your mouse button does? The mouse button will respond and move to the left. It's similar to this way of one question and one answer.

PS/2 sends interrupt requests through the system. The PS/2 mouse button will actively interrupt the current activity of the CPU, and then tell the computer what I want to do. Compared with the USB method, PS/2 has lower latency and faster response time in actual use.

3. PS/2 has better compatibility

The current win7 system is still loved by many players. In the installation process of the native win7 system, there is no integrated USB driver, which causes the USB mouse button to not work normally. The PS/2 mouse buttons are not restricted. Although some seem to be able to use a USB mouse, the simulation effect is really mediocre, and a significant delay can be seen.