| 摘要 |
There is disclosed an improved interface apparatus and technique for real time transfer of characters from a text processor to a magnetic card recorder. Characters retrieved from a buffer are subject to reformatting and other operations, the duration of which varies within two character output cycles. The disclosed technique permits time, in effect, to be borrowed from succeeding character cycles. A character is processed and loaded temporarily in a register. The parallel character is then transferred to a serializer register which outputs serial bits to a card writer control for recording on a magnetic card. At the same time this transfer, serialization, and output is occurring the processor is preparing the next character to be written. A character can be output in real time so long as the interval between it and the preceding character is less than two character output cycles in length. |
