SQL数据库连通性测试.ec sql server 数据库访问操作 封装成模块 使用方便 简单 ，提供测试数据库连接字串的测试连接功能 -SQL database connectivity test the ec sql server database access operation packaged as a module is easy to use and simple to test connectivity test the database connection strin

比较简单的串口测试工具，用串口线连接两台电脑的串口，两台电脑都运行测试工具即可。串口的波特率必须相同。-Relatively simple serial testing tools, with a serial cable to connect two PC' s serial port, both computers are running the test tool can be.