EasyARM1138人机界面扩展板是EasyARM1138开发板量身定制的一款人机界面的扩展板。该扩展板方案使用了基于ST7920控制器的中文图形128×64的LCD和4×5矩阵键盘，丰富的人机界面完全能够满足用户的要求。与主机的通信采用软件模拟SPI串行数据通信，只需4根线，就能同时满足主机对于LCD和键盘的读写。

此方案给用户提供了完整的硬件设计原理图，PCB图，软件调试例程，LCD模拟SPI软件包，键盘管理芯片ZLG7289模拟SPI软件包。-EasyARM1138 expansion of human-machine interface panels are tailored EasyARM1138 development board a man-machine interface of the expansion board. The board extended the program to use the ST7920 controller based on the English of 128 × 64 graphic LCD and 4 × 5 matrix keyboard, a rich man-machine interface can completely meet user requirements. Communication with the host software Analog SPI serial data communications, only four lines, will be able to simultaneously meet the host for the LCD and keyboard to read and write. This program to provide users with a complete hardware design schematics, PCB diagram, software debugging routines, LCD Analog SPI package, keyboard ZLG7289 management chip Analog SPI packages.