| 摘要 |
<p>PURPOSE:To provide a device which can easily measure the energizing time by means of a microcomputer with built-in equipment without using any special means such as a motor by measuing the time only in an energizing mode to store the measured time in a memory and then to display it by a display means. CONSTITUTION:When the power is supplied to an entire device, a time measuring means 2 reads the time information out of a storage means 3 and sets it to an internal counter. The means 2 also sends the present time information to a display device 4. Then, a power detecting means 1 detects the operation of a power supply and knows an energizing mode. Thus, the means 1 sends this information to the means 2. When this state lasts, the means 2 counts up the internal counter and stores the present time information in the means 3 after one hour passed. At the same time, the means 2 sends the time information up to the present time to the means 4. The means 4 shows the time information based on the received information and also shows a message when the time information exceeds a fixed time.</p> |
