This experimental board uses the simulation chip STC89C51RD or 52 as the core component. The most unique feature is that the program can be downloaded online. And there is also storage inside the single-chip microcomputer... To modify the program, you no longer need to use the programmer to burn the program and then insert it into the experimental board. You only need to download it from the serial port, which is convenient and fast. The experimental board directly draws power from the USB port of the computer, eliminating the trouble of drawing power from the rectifier. It is truly possible to play 51 with one computer and one board. In addition, the board area is relatively small... about 12 x 7 CM.
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