摘要 |
<p>Described is a system for causing a device such as a printer to receive data from an external device such as a host computer, the system allowing the printer to automatically set not only a pattern for outputting an acknowledge signal. (ACK) and a busy signal (BUSY) but also the capacity of a receiving buffer (31) so as to match the external device, so that efficient data reception can be made, thereby freeing the external device at an early stage of the data reception. <IMAGE></p> |