Television wall architecture and bidirectional communication process

This invention relates to a TV wall frame comprising a host computer and several TV wall hosts both with RS232 communicating port and a two-way communication method. The frame is characterized in that: transfer port of every TV wall host is connected to the next TV wall hostí»s receive port, the transfer port of last wall hostí»s RS232 port is connected to receive port of host computer í«s RS232; when the host computer send an RS232 commanding signal, the TV wall host at first receiving the signal will change handle in the signal and add counting value to the signal, and when the next wall host receives this RS232 signal, it will add an incremental to counting value. Through this, the frame can easily reach the purpose of two-way communication.