Electrically operated slot machine using digital logic - has built-in memory for operation and evaluation of combinations, using operation cycle based upon double win possibility

摘要

The coin operated gaming machine is of the type utilising three rotating symbol drums is electrically operated and includes facility for evaluation of combinations. The three drums (2,3,4) carry symbols around the peripheries and a sensing stage (6) detects the rest position. The detected signals activate an identification stage (9) and a control unit (10) accesses a memory (11) Winning combinations are identified and a secondary memory (15) contains secondary combinations. Control of the switch over between memories is provided by digital switching logic.