这是个基于VB的温湿度采集界面，主要是三部分：用户密码输入界面；温度采集显示，列表显示（存入数据库）；数据查询界面-This is a based on VB collection interface of the temperature and humidity, mainly of three parts: the user password input interface Temperature gathering shows that list (deposit database)

Visual Basic与RS-232串行通讯控制，对于想用VB开发串口通讯的初学者很有帮助。文档格式为PDF，无需解压密码-Visual Basic and RS-232 serial communication control, who want to develop serial communication with VB very helpful for beginners. Document format is PDF, no need to extract the password

vb中用到 的modbus代码，好好保留，-Please carefully written to upload data more features, including content descr iption (at least 20). Try not to let the owners have spent time on the revised instructions you. Unpack the archive and can not have a password.