| 摘要 |
<p>PURPOSE:To decrease the number of parts and the number of steps of a processing program by using a switch circuit with prescribed functions, and thus decreasing input terminals of a control circuit. CONSTITUTION:A switch circuit 1 is equipped with switches (j)-(m) which are defined individually for operation commanding and operated selectively to switch to a voltage with a prescribed voltage division ratio, and a switch (n) which when said switches are all turned off, has a state holding function and obtains a prescribed ratio by switchying. A stepwise voltage obtained on the basis of a prescribed code is compared by a control circuit 2 with a voltage division value from the circuit 1 to decide on the selection states of the respective switches, and on the basis of the decision result, the operation control over a mechanism part 7 is performed to display the state on a display part 6. Further, a head position detecting circuit 8 detects the position of a head operated by the mechanism part 7 to control the position of the head through a control circuit 2.</p> |
