Abstract: An electronic card game simulation apparatus adapted primarily for portable hand-held use by a player. A microprogrammed MOS/LSI device receives selection signals generated by means of a keyboard to which a player has access, and controls the progress of the card game in response thereto and in accordance with established game rules as programmed in a storage device such as a read only memory unit. A display device, such as a plurality of seven-segment fluorescent displays, indicates the identity of simulated playing cards dealt randomly from a full 52-card deck of simulated cards as the game progresses. In a preferred embodiment, the microprogrammed device includes memory capacity, arithmetic capability, and appropriate programming to permit a player to play the well known game of Blackjack against a phantom dealer and to place bets which are automatically added or subtracted from a previously established stake in accordance with the outcome of each hand.

Abstract: An offset reduction apparatus for an analog circuit in which the analog signal input to the loop is forced to zero and the loop output is determined. The previously determined value of the offsets is subtracted from the total output, thus leaving only the desired signal.