STC8H8K64U Development Board

I'd never used an STC microcontroller before, but there was a promotion, so I bought two to use as a development board for learning. I bought them on Taobao, and with the coupon, it was practically free.
The circuit was based on the official documentation and other projects, kept to a minimum.
After the board was built, I soldered the components.
I usually use a 662k for LDOs, but this time I used an AMS1117. I designed the board using a SOT223 package, but discovered it wasn't available. Luckily, the SOT89 had the same pinout, so I managed to connect
multiple components. The manufacturer's datasheet said the 1117 required a tantalum capacitor, which I didn't have, so I added a 1-ohm resistor in series. Alternatively, you can use electrolytic capacitors.
Following the tutorial, I configured Keil to support C51, C251, and ARM. After learning how to program LEDs, I
compiled the HEX compiler and used the official ISP software. USB was very convenient, and
I successfully lit the LEDs.