Parallel communication with handshake between two microcomputers

An implementation of the full asynchronous interface between two microcomputers is described. It details the design and test of a two-way, one line message display arrangement between two machines. The arrangement allows the user to send a message from the transmitting machine to the receiving machine. The message appears simultaneously at the screens of both the transmitting and the receiving machines. The two-way arrangement allows each of the two machines to send and to receive messages. Eight data lines are connected between the input and output ports of the two microcomputers.<
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