这是一块用protues制作的学习板。主要是以AT89C52单片机为核心的学习板，包含LCD,LED,矩阵键盘等模块。对初学单片机者十分有用。-This is a study made use of protues board. Mainly based on AT89C52 microcontroller as the core of the study panels, including LCD, LED, matrix keyboard module. SCM are very usefu