| 摘要 |
A device for controlling tennis competitions with a scoring display for the public or in miniaturized form on a device carried by the tennis player. There are push-buttons for each opponent to enter the winning points into a computer and the scoring display shows the results in the usual way for tennis. An input before the match states the right of service for the following games including tie breaks, which will also be shown on the scoring display. With the inputs stop watch timer(s) start to run and control the time rules of the tennis competitions, which may be shown by analog signs around the circumference of the scoring display in one embodiment. With a functional push-button one can switch to the scoring display the real time and other important dates for tennis competitions.
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