非常实用的单片机键盘扫描程序，含常规行列扫描，通过74LS164或74HC595的串并转换后的行列扫描，以及通过TLC1543后的A/D转换后的直读扫描，再有常规的直读扫描，程序中含有记忆算法。-Very practical single-chip scanner keyboard, with the ranks of conventional scanning, 74LS164 or 74HC595 through the string and the ranks of the post-conversion scanning, as well as through the TLC1543 after A/D conversion time straight after the scan, and then there are the direct reading of conventional scanning and procedures contained in the memory algorithm.