| 摘要 |
PURPOSE:To improve workability and decrease the number of keys used, by performing rewriting of zero point, clearing of tare substracted quantity and tare subtracted processing by means of one operating key. CONSTITUTION:The voltage signal from a measuring part 6 is inputted to a central processing unit (CPU)9 via an A/D conversion part 7 and a data selector 8. The CPU9 controls an RAM11 based on the program set to an ROM10, and takes-in the weighing data from an A/D conversion part 7. Also, the CPU9 takes-in the key signal from a key matrix 12 comprised by providing a zero key 4 etc. The CPU9 reads out the program corresponding to the ROM10 according to the key signal from the key matrix 12, and controls the RAM11, and also controls a digit decoder 13 and a segment decoder 14, thereby driving and controlling a display device 3. |
