| 摘要 |
PURPOSE:To enable input of numerals independently for each digit and to disable input of erroneous numerals as the time limit, by providing a judging part to compare the maximum settable value of each digit and the numeral inputted from the setting part. CONSTITUTION:An operating part 1 consists of time limit setting keys, and input key signals are sent to a judging part 2. In the judging part 2, the inputted numeral signal is compared with the maximum value of display time limit. And the input signal, when confirmed not to exceed the maximum value, is preset into a counter 3, and the content in the counter 3 is displayed in a display part 4. If the set value is erroneous, it is detected in the judging part 2 and is not inputted into the counter 3. |
