STC 32F/32G/8H 15F/15W DIP40 Adapter Board

When learning 8051 microcontrollers, textbooks almost always include DIP40 packages
, as shown in the image below.
Therefore, development boards with DIP40 locking sockets for traditional
8051 microcontrollers are very common. The STC 32F/32G/8H 15F/15W series also have DIP40 packages, but their pinouts differ from the traditional 8051.
Using STC-ISP software,

we can compare the pinouts of different series:

STC32F12k64,
STC8H8k64U,
and STC15F2K60S2 .
A closer look reveals that the differences are minor.

Therefore, the goal is to use a single adapter board for the STC 32F/32G/8H 15F/15W series DIP40 packages, enabling them to be used on traditional 8051 DIP40 development boards, allowing older development boards to use the latest microcontroller series.

I'm a complete beginner in PCB design, with ideas but limited skills. I stumbled upon this activity and want to participate in this competition to challenge myself.
My work has absolutely nothing to do with electronics;
because I have to work, I can only participate in this activity in my spare time. Only
after receiving the prototype
and truly starting from scratch did I realize how difficult it was to turn what I thought was simple
into a tangible product. The various difficulties involved in transforming a seemingly simple idea into a physical object are something you can only truly understand after experiencing them yourself, but that's part of the joy of loving electronics. I'm grateful to JLCPCB for this platform and for this opportunity to participate in the STC Microcontroller Creative Design Competition.
Since I'm just starting to learn PCB design, the project involves four boards. I found a problem with V3 after creating the board, but it worked after manually modifying the jumpers.
V4 fixed the errors in V3 and optimized the circuitry, but I didn't create another board for it.
All the design functions have passed testing. The test video is too large to upload; please click the links to watch it on
Xigua Video,
Bilibili, or other platforms.