This design using AT89C51 microcontroller to control the matrix liquid crystal display and keyboard, to achieve a simple calculator function.Keyboard input required by the calculating formula, the formula is displayed in the LCD of the first line, when the type is equal to number, the results will be displayed in the LCD of the second line.The design of LCD use 1602 character LCD display and the number of operations involved in computing the final result, the keyboard uses 4* 4 matrix keyboard.

简易计算器.C.txt
简易计算器.doc

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