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[Com Port] add DL : 0: 串口计算器，可以实现加、减、乘、除、括号、sin（）、cos（）等基础运算，支持浮点数和整数，以LCD显示，有报警功能。-Serial calculator can add, subtract, multiply, divide, brackets, sin (), cos () and other basic operations, support for floating point and integer, with LCD display, alarm function.
Date : 2025-12-28 Size : 84kb User : 李思扬