Related links：
Website:https://www.waveshare.com/7inch-dsi-lcd-c.htm
WIKI:https://www.waveshare.com/wiki/7inch_DSI_LCD_(C)_
These are the drivers for 7inch DSI LCD (C)
Pi3: Support Raspberry pi 3 Module B+, Raspberry Pi 3 Model A+ and Compute Module 3+
Pi4: Support Raspberry Pi 4 Module B and the Compute Module 4
Please choose the correct driver according to the type of Raspberry Pi board
Backlight: Software for controlling the brightness of 7inch DSI LCD (C), if you do not need to adjust the brightness of display, you needn’t to install it.
相关链接：
中文官网：https://www.waveshare.net/shop/7inch-DSI-LCD-C.htm
中文WIKI：https://www.waveshare.net/wiki/7inch_DSI_LCD_(C)_
7inch DSI LCD (C)的驱动程序分为Pi3和Pi4版本
Pi3目录驱动支持的主板有：Raspberry Pi 3 Model B+、Raspberry Pi 3 Model A+和Compute Module 3+
Pi4目录驱动支持的主板有：Raspberry Pi 4 Model B和Compute Module 4
需要根据相应的树莓派版本选择安装对应驱动。
Backlight是7inch DSI LCD (C)的背光控制上位机程序，如果你不需要控制7inch DSI LCD (C)的亮度，则可不使用。