| 摘要 |
PURPOSE:To enable to identify the number of pulses independently of the count number, 0 or more, or less, by outputting the number of pulses as they are as to the count of the down input pulse from ''0'' count state and by the display of + or - to each display value to distinguish it with the count of the up input pulses. CONSTITUTION:The up and down selection circuit 4 selects mutually the up or down input pulse and feeds it to the up or down input terminal of the counter 1 while the output count value of the up and down counter 1 is ''0'' count or less up down count area. The drive circuit 5 drives the identification display unit 6 corresponding to the selection and return operation of the up down selection circuit 4 and displays - at the state of selection and + at the state of non-selection. |
