| 摘要 |
PURPOSE:To reduce the cost and to improve the precision by starting frequency conversion using a reference resistance from the 0 state of a frequency dividing circuit and storing an output which is a specific number of times later, and starting frequency conversion using a thermistor from the next 0 state and displaying data coincident with the stored value. CONSTITUTION:Storage means 5 and 8 and frequency dividing means 2, 7, and 3 are reset and measuring operation is started; and the resistance value-frequency conversion is performed by using the reference resistance to input a clock to the means and also input a clock from an oscillation means 1 to the means 2, and the count state of the means 2 is stored in the means 5 every time a specific number of clocks are inputted to the means 7. Then, the frequency conversion is stopped and the frequency conversion using the thermistor is started after the output of the means of the means 2 is reset to the original value; when the count state of the means 2 coincides with the stored value of the means 5, it is stored in the means 8 and processed as specified and the result is displayed on a display means 10. |
