I use a QQ2440V3 board with a 800*480 7-inch screen. I successfully changed the display to portrait mode by adjusting the display driver parameters. I observed that the pen touch calibration procedure
I want to write a small program for disk operation under evc, which needs to use functions such as OpenStore and OpenPartition. The definitions of these functions can be seen in the header file of the
I am a beginner in protel and want to convert a PCB diagram into a schematic diagram. Is there any software to do this? There are a lot of copper wires on the PCB diagram, which looks very complicated
[align=left][b]Plug-in assembly line definition: [/b] [/align] [align=left]Plug-in assembly line uses steel frame and special aluminum alloy track as main parts. The assembly line can be divided into
I use Guo Tianxiang's TX-1C development board and use STC-ISP to download via USB to serial port. It was working fine before, but after I downloaded a program for a matrix keyboard, it suddenly stoppe
The school is going to design a device to monitor and alarm the power consumption of office buildings or teaching buildings using ARM7 and GSM modules. There are two main functions to be realized: 1.