| 摘要 |
PURPOSE:To eliminate counting deviation by differentiating the edge of waveforms detected between the counting up and down operation of a counter. CONSTITUTION:In the counting, up, an up/down control signal moves to L, at which the output of an AND gate 6 is invariably fixed. The output of a Hall IC 4 for detecting the rotation through an inverter 7 is inverted and inputted into a decimal counter 5a through an AND gate 8. In the counting down, the output of the Hall IC 4 is inputted into the decimal counter 5a as intact to subtract. |
