基于AT89C51单片机计算器数字输入显示模拟设计 第一次按下时，显示“D1”；第二次按下时，显示“D1D2”；第三按下时，显示“D1D2D3”，8个全显示完毕，再按下按键下时，给出“嘀”提示音。-Based on AT89C51 microcontroller digital input display analog calculator designed for the first time, when pressed to show " D1" second time,

基于单片机at89c51。 12864显示唐诗，包括proteus仿真-Based on MCU at89c51. 12864 poetry, including proteus simulation