battery saver

With many electronic games, such as heads-or-tails, roulette, or any of the versions of electronic dice, a consider-able saving in battery life can be obtained by ensuring that the circuit, or at least the current-guzzling displays, are switched off after each throw or turn. Naturally enough, it would be somewhat tiresome to have to do this by hand, so the following circuit is intended to take care of this chore automatically.