Abstract: An electronic digital dual processor system including an interface to an external memory in addition to an internal memory. The dual processor architecture includes dual independent and simultaneously operable registers for the temporary storage of data from an arithmetic and logic unit and for memory addressing. The internal memory includes a ROM for storing instructions and a RAM for storing data. The internal memory is also used to store instructions. Control and timing circuitry is included for the generation of microinstructions for the instructions stored in the memory. The control and timing circuitry provide for the simultaneous and independent execution of the microinstructions involving the dual register sets.

Abstract: A two player game apparatus includes the inputs for the first and second player, together with display for each player with a common display for providing the game status connected to a single electronic digital processor. The processor system further includes two central processing units where one central processing unit performs the game algorithm for one player and the second central processing unit performs the game algorithm for the second player. Each individual's central processing unit provides individual player status for its player input. Both central processing units provide data for the common display.

Abstract: An electronic digital processing system implemented on a single MOS/LSI semiconductor chip including a ROM for storing instruction codes, a RAM for storing data, an arithmetic logic unit for performing operations on data under control of microinstructions or commands, control circuitry for generating commands in response to the instruction codes in a plurality of central processing units. The fetching of instructions from the ROM, the accessing of data from the RAM, the operation of the arithmetic unit are controlled by the central processing units which share the same data paths that couple the central processing units to the ROM, RAM, arithmetic unit and control circuitry.

Abstract: An electronic apparatus with processing capability dedicated to the display function. This apparatus includes a keyboard for inputting data into the processor system and a display for presentation of the output data from the processor system. The electronic digital processor system includes a memory, an arithmetic and logic unit and two central processing units that operate independently and simultaneously. The keyboard input is connected to one central processing unit and the display is connected to the second central processing unit. The algorithm in the first central processing unit is dedicated to obtaining inputs from the keyboard and performing certain operations defined by the function of the apparatus. The algorithm contained in the second central processing unit is dedicated to the display of output data contained in a RAM in the digital processor system. Since both central processing units operate simultaneously and independently, they both use the same locations in RAM.

Abstract: An electronic digital processor system including a plurality of processing units with dedicated input port and output port for each of the processing units and an output port that is shared by the processing units. The digital processor system also includes a ROM for the storage of commands, a RAM for the storage of data, an arithmetic and logic unit for performing operations on the data, two independent and simultaneously operable processing units for executing these commands on the data and the control circuit for providing for simultaneous execution of commands in both processing units.

Abstract: An electronic telephone including a keyboard input, a telephone line interface, a speech synthesis device with a control line and an audio line coupled to the telephone line interface, a message recorder with an audio line coupled to a telephone line interface, and an electronic digital processor system to control the device. The electronic digital processor system includes two independent and separably operable central processing units. One central processing unit is activated by the keyboard when a telephone number is input and may be used to store numerous, frequently called telephone numbers.