Chess Clock LISA
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Common types of electronic clocks typically serve for three basic requirements:
Individual clocks differ a bit each other but besides of limited performance, they are similar each other even as for another point: everything is conformed to the affort to minimize costs often at the expense of functionality. Technical resources are pared down as much as possible, used parts are limited for showing (displays) and settings (pushbuttons) or quite missing (non-volatile memory, light and acoustic indication etc). Some manufacturers even prefer "Chinese" approach: emphasis on external looking above all, usage of devices and technology exceeding the limits of acceptability ("paper" printed board, pushbuttons from conductive rubber etc). The priority is to "survive" the warranty and then throw out when first failure occurs repair is more expensive than a new piece...Results of such approach are the following:
LISA allows for nearly everything the arbiters as well as players wish.
LISA has even features which precede the present times: possibility of advantageous playing modes which were not be required so far because no existing clocks offered them.
LISA provides arbiter even with information which is hardly available by other means, above all if he had not been present next to the game. It is especially welcomed in time-troubles which occur typically for more games at the same time.
If there is a bit of "happiness" and "will", features of such intelligent clock can even apply in official usage by FIDE: new play modes, adjustment of laws to increase arbiters' rights while using data from the clock (e.g. the rule concerning overstepping the time after illegal opponent's move or "synchronous" overstepping by both players).
LISA keeps advantageous features of mechanical clock as much as possible (e.g. time is started by the play button of blacks) and, if it is possible, LISA improves them (fast and comfortable stopping the time with big middle pushbutton Stop instead of lever mechanism detent on the back side of Jantar or manual balancing the dead-point of Garde, optional ticking,...).
Since digital clock offers more additional functions in comparison to the mechanical ones (e.g. counting moves to computerized adding of time when switching to new period), it is clear that in some situations players are not allowed to behave as they were used. In spite of this, these situations take place from time to time: Sometimes it is hard to resist deep-rooted habits (immediate switching the clock after illegal opponent's move or after accidental switching the clock by the next chessboard player...). LISA respects such player manners as much as possible. Resulting illegal situations are arbiters' nightmares if using other digital clocks. Besides of general fast and lucid tool, LISA has even immediately (hot-key like) available specialized built-in corrections.
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