Automatic personal score-board for tennis - is worn on player's wrist with pushbuttons for data entry and logic for continuous updating of times and scores

摘要

The device is built into a case similar to that of a wrist-watch with a strap and six digital displays showing points scored by the player and opponent in the current game, the tally of previous games and sets, the elapsed time from the start of the match and the time of day. - Distinctively coloured push-buttons, are provided for the recording of scored points, with an asterisk displayed adjacent to the latest entry, and additional buttons for error cancellation and timing commencement.