| 摘要 |
PURPOSE:To shorten the operating time and to facilitate the operation of the operator, by completing the clear process of the input field by only using a light pen. CONSTITUTION:Pick-up signal is detected by an ERASEEOF input detection section 12 and fed to a position judgement section 14. Then, it detects the coordinate position on a display picture tube 10 and trasmits to an attribute character reading section 17. The attribute character reading section keeps the information sent from the position detecting section 14 in an internal resistor A and at the same time, sets the value of this A in a buffer memory access address resistor B to start the reading from a buffer memory. All portions other than designated by a light pen 11 are cleared in the corresponded intput field and when the attributed character of the head position of the next field is read out, an erase processing section 19 completes the process and each section is reset. |
