Abstract: A random lottery computer which can be pre-programmed for various lottery markets is provided. Lotteries vary in the number of selections to be made, the range for each selection and whether the selections are single digit or double digit. A microprocessor controlled system, with random number generation, is programmed for these various lottery parameters by a game selector switch and by push button switches which increment or decrement the selection range. The lottery computer may be battery powered or light powered. Provision is made for initializing the microprocessor when power is first applied. Power is also disconnected after a given interval.

Abstract: A lottery computer which can select numbers and/or letters randomly and with and without independence between selections. Random numbers are generated independently by having a number of counters run simultaneously for an arbitrary period of time with each counter running at a different repetition rate. Using a high repetition rate compared to the counter running time guarantees randomness. Using separate counters run by separate clocks guarantees independence between selections. Random numbers in which each random selection excludes all other random selections are generated by using a microprocessor which cycles through a loop which contains a complete set of values. After each random selection the random number chosen is removed from the set of values from which a random choice is to be made. A generalized embodiment allows a user to select the alpha or numeric nature of each selection and to set limits on the range of selection.