| 摘要 |
<p>An attachment 20 to a computer 10 is identified by performing computer read/write operation on ID pins 1, 2 on the attachment via interrogated connectors 450:0, 450:1 in a series of cycles. In the first cycle, the contents of the machine ID is read. Based on the result, one of the signals (previously high signals) is made to go low in the second cycle. The final read cycle determines the machine ID. It is possible to mix classical machines that did not use this invention with fewer machine ID's with machines that incorporate this expanded identifier approach. <IMAGE></p> |
