Introduction - If you have any usage issues, please Google them yourself
Based on assembly language interface technology, functions: A, B two computer by the line RS-232-C standard serial cable connected. Programming (using C language or assembly language can be) A, B two interactive computer serial communications. For example: A machine sends information to B, B machine determine the receipt of information: if ' 0 to 9 ' , find its square, and then back to a machine and a machine on the display if the letter is received, the character is displayed on the B machine. Or: A, B and two computer transmission of information via the serial interface of a dialogue response, etc.