| 摘要 |
PURPOSE:To display each measured value with dots, by measuring the temperature at preliminarily set time or at every certain time and storing every measured value to operate a switch optionally after the start of temperature measurement. CONSTITUTION:The output signal of a temperature sensor 1 is converted to a digital value in an A/D converter 2 and is read into a microprocessor 3. The clock signal of a clock oscillator 4 is counted in a time counting counter 5, and the output is read into the microprocessor 3 also. The processor 3 stores a program, which is operated by an external switch 6, in a read-only memory 7. When the switch 7 is operated to start the temperature measurement mode, the A/D-converted temperature value is read from the converter 2 at every just o'clock by the clock signal from the time counting counter 5 and is written in a read/write memory 8, and thus, data for 12hr is written. Consequently, the time and the temperature value in a certain period are displayed with dots as required to extend the display function of the clock. |
