| 摘要 |
PURPOSE:To perform recording of sudden input change, which occurs instantaneously, by switching a plurality of buffer memories, which store dot data, to writing and reading. CONSTITUTION:An analog input is digitalized by an A/D converter 11. A dot- data forming means 16 forms dot data from the input data, which is read in time series and writes the data into buffer memories. A memory means 18 has a plurality of buffer memories (a) and (b). A buffer-memory switching means 20 switches the buffer memory, whose writing is finished, into reading, and switches the buffer memory, whose reading is finished, into writing. a graphic dot printer 29 displays the dot data, which is read out of the buffer memories. In this constitution, sudden input change, which occurs instantaneously, can be recorded. |
