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Hardware-integrated-design

使用普中51-单核-A5实验箱,实现float类型混合四则运算以及括号操作 Lcd1602插入盒子上的接口 P1 接 jp3(反接) P3 接 JP1

按键布局

矩阵键盘

---- 0 --- 1 --- 2 --- 3 ----
---- 4 --- 5 --- 6 --- 7 ----
---- 8 --- 9 --- X --- X ----
---- X --- X --- X --- C ----

C:clear,完成清屏 独立按键

---- + --- - --- * --- / ----
---- ( --- ) --- . --- = ----

功能

可以最多嵌套2层括号(和RAM有关),float精度计算。使用状态图 State

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