| 摘要 |
PURPOSE:To make it possible to simplify the constitution of an apparatus, by providing an immediate command buffer high in data outtake priority as input printing data storing buffer apart from successive command and character data buffers. CONSTITUTION:A data input part 16 stores printing data in successive buffer 14 in the case of character data or successive command and stores the same in immediate buffer 15 in the case of printing command. In this case, a data outtake part 17 investigates the presence or absence of the content of the immediate buffer 15 at first and, if data is stored, reads the same and, if not stored, reads data from the successive buffer 14 to sent the same to a data analytical part 18. Herein, the kind of data from buffer 9' is discriminated and, with respect to successive or immediate command, the control signal corresponding thereto is transmitted to PORT2 while, with respect to character data, said control signal is transmitted to a type selecting data calculating part 19. By this method, the constitution of an apparatus can be simplified. |
