Abstract: A fully duplicated memory system for a single central processing unit (CPU) is disclosed. The memory system comprises a primary and a secondary control unit and a primary memory bank and a secondary memory bank. Each memory bank comprises one memory controller and a plurality of memory modules (e.g. six memory modules). Each memory module stores a plurality of binary words in distinct addressable storage locations with a unique address code defining both one distinct addressable storage location in a memory module in the first memory bank and one distinct addressable storage location in a memory module in the second memory bank. A random access memory (RAM) stores an indication of the read and write status of each memory module in both the first and second memory banks. One of the control units, responsive to both the CPU and the RAM determines which memory bank (primary or secondary) is accessed in response to a read or a write command from the CPU addressed to the memory banks.

Abstract: A game is disclosed in which each of a group of players is provided with a color-coded scorecard. The format of each color-coded scorecard is similar to the format of a scoresheet for scoring a game of bowling. A caller is provided with a bin filled with ten tokens of each color. Each token of the same color is numbered with one of the numerals "1" to "10". The caller randomly selects tokens from the bin and calls the color and number of each token. If the color called corresponds to the color of his color-coded scorecard, the player writes the number called as the first or second ball in a frame of one game on his scorecard. Play ends when one player completes all frames of a game, whereupon all other players complete unscored and partially scored frames by marking gutter balls. Thereafter, each player totals his score for the game in accordance with the rules of bowling. The player with the highest score wins the game. The caller is also preferably provided with a tot board and pegs.

Abstract: A wheel rim having a well for tire fitting and adjacent each bead seat a circumferentially extending groove formed to accommodate an extended bead retaining toe of a tire wherein at least one air pressure release passage is provided from a point within the groove positioned such that a correctly fitted retaining toe covers the point. The passage may comprise a groove across the bead seat or a hole through the rim.