This program was designed as a utility tool to allow the user to send and recieve data from a serial com port while monitory the byte data. If a loopback ciruit is made on the com port(jumper send to recieve DB9 pins 2 & 3) a developer can also monit

VB倒置字符串并每两个字符（一个字节）间加空格显示-VB inverted string and the space between two characters (one byte) shows

本代码为在VB6.0环境下所写的CRC_16字节型算法，可用于上位机与下位机串口通信使用。-This code in VB6.0 environment CRC_16 written byte-type algorithm, can be used for PC and next-bit machine using serial communication.