Introduction - If you have any usage issues, please Google them yourself
AT89S51 Single-chip experiments and practice of system board manual, with schematics, procedures examples. (Integrated a number of hardware resources modules, each module can be independent of their respective units, each combination can be, therefore, can be different levels Single-chip Single-chip enthusiasts and developers to provide different development environment.
Packet : 67506235at89s51.rar filelist
At89s51.pdf