vb的打印，调用打印函数，先测试打印机向串口发数据，将字符串转为十六进制表示的字符串，从接收缓冲区读取数据，关闭串口事件响应-vb print, call the print function, send the first test the printer to the serial data string to hexadecimal string from the receive buffer read data off the serial port incident response

用VB编写，控制计算机的打印口，利用打印口驱动温度传感器DS18B20，实现数字式测温。体积小，使用方便。-Prepared to use VB to control the computer s print port, the use of print port driver temperature sensor DS18B20, the realization of digital temperature measurement. Small size and easy to use.