4*4键盘扫描，依据键值，LCD双行显示，双行显示满后，清屏，重新显示

一款液晶程序，驱动SANYO的LC7981，支持双屏驱动，程序比较简洁。

工作上的需要写了这个程序，贴上来给能用到的朋友。解析详尽，里面几个可移植性很好的子程序段，如延时、写屏、打包程序中的自删除等，自认为写的不错，拿来分享一下。双击压缩包查看密码.-Work to write this program, Tie Shanglai to can use to friends. Detailed analysis, which a few paragraph subroutine good portability, such as delay, writing scre

双HT1621驱动大于32路液晶屏控制程序-The double HT1621 driver is more than 32 LCD control program