kei4实用教程1，keil软件是目前最流行开发MCS-51系列单片机的软件。,kei4 Practical Guide 1, keil software development is the most popular MCS-51 series single-chip microcomputer software.

KEIL代码生成器，可以生成关于KEIL2-KEIL4的所有LICENCE。有51的也有ARM的，效果很好。已尝试多次了-KEIL code generator that can generate all of KEIL2-KEIL4 LICENCE. 51' s also have ARM' s, very good. Have tried many times