| 摘要 |
PURPOSE:To enable to hold the line polarity at the same polarity for the time designated, by providing the delay circuit between the character transmission circuit and the control circuit. CONSTITUTION:The delay circuit 2 is provided between the character transmission circuit 1 and the control circuit 3. When the holding of polarity for a given time is required for the circuit 3 after transmission of character, the transmission character is transferred on the transmission data tranfer line 5, the line polarity after character transmission is designated with the holding polarity indicating signal line 4 and the delay time to the circuit 2 is designated with the delay time set signal line 6, allowing the circuit 1 to be held to the designated polarity after character transmission. Further, the circuit 2 delays the processing request signal from the circuit 1 in the designated time with the circuit 3 and transfers it to the circuit 3. Since the circuit 3 processes the processing request signal trasferred with a delay like this for the next character signal immediately, the polarity hold for a given time after character transmission can be made. |
