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- 基于89s52单片机74595和74138的16乘32点阵显示,能实现左右上下滚动和上下卷帘等变幻画面,并且可实现proteus仿真-Based on 89s52 microcontroller 74 595 and 74 138 16 x 32 dot matrix display, scroll up and down to achieve about such changes and rolling up and down the screen, and can achieve prote