LPC2138键盘显示密码串口代码包含键盘显示程序，LCD驱动程序，串口程序在UCOS2下的总程序-LPC2138 keyboard and display password serial code contains the keyboard display program, LCD driver, serial program under the general procedure UCOS2

4×4矩阵式键盘识别技术,在proteus和keil环境下运用汇编和C语言程序编写的，有生产的目标文件。-4 × 4 matrix keyboard recognition technology, the environment, the use of proteus and keil compile and C language programming, there are production of the target file.