| 摘要 |
PURPOSE:To simplify and economize the circuit of a tablet by connecting plural auxiliary electrodes to one analog switch and inputting data to a CPU. CONSTITUTION:An auxiliary electrode part 20 consists of an electrode switching part - coordinate data detection part 21, a multiplexer 22, and the analog switch 23. The output of the X-directional and Y-direction detection part 21 is inputted to the analog switch 23 together with the output of the multiplexer 22 for the auxiliary electrodes. Then the input is sent to a CPU and A/D-converted, and the data is processed by a ROM and a RAM. Thus the X/Y-axial data of the editor are processed through the one switch 23 with one A/D input, and the circuit is simplified and economized. |
