1
Graham S Tubbs: Turn-off-processor between keystrokes. Texas Instruments Incorporated, Rene E Grossman, Leo N Heiting, Mel Sharp, October 11, 1983: US04409665 (139 worldwide citation)

A calculator having constant memory utilizing a classical CMOS metal gate process, a low power microcomputer with on-chip and external constant memory capability, and multiple partition power control of circuit groups. Incorporation of a first and second switched negative voltage and a non-switched ...


2
Graham S Tubbs: Digital processor system with conditional carry and status function in arithmetic unit. Texas Instruments Incorporated, John G Graham, December 18, 1979: US04179746 (86 worldwide citation)

An electronic digital processor fabricated on a single MOS/LSI semiconductor chip includes an arithmetic unit operating on digits one at a time, with a carry output and a carry input. Commands for operating the processor are produced by decoding instruction words one at a time from a large instructi ...


3
David J McElroy, Graham S Tubbs: Digital processor system with direct access memory. Texas Instruments Incorporated, John G Graham, May 29, 1979: US04156927 (76 worldwide citation)

A digital processor which may be used in a calculator is provided by an MOS/LSI semiconductive chip which contains a bit-parallel arithmetic unit for operating on data stored in a random access memory. Selector units determine which of several sources produce the inputs to the arithmetic unit. The r ...


4
George L Brantingham, Perry W Lou, Lawrence J Housey, Graham S Tubbs, Jeffrey R Teza: Data processing system integrated circuit having modular memory add-on capacity. Texas Instruments Incorporated, Rene E Grossman, Leo N Heiting, Melvin Sharp, May 8, 1984: US04447881 (47 worldwide citation)

A method of designing and manufacturing a modular integrated circuit for a 4 bit microcomputer family utilizing a modular concept which is adaptable for a variety of applications and specific circuit desgins. The modular circuit is designed as a large block of cells which contains an ALU, instructio ...


5
Graham S Tubbs, James E Ponder: Method of making CMOS integrated circuit device. Texas Instruments Incorporated, John G Graham, October 20, 1981: US04295897 (46 worldwide citation)

An improved CMOS device and method of making it are provided which utilize basically the standard N-channel self-aligned silicon gate structure and process, modified to include a P-channel transistor. A P-type substrate is used as the starting material, with an N-type tank formed for the P-channel t ...


6
Graham S Tubbs, James Charles Abel: Function coprocessor. Intel Corporation, Blakely Sokoloff Taylor & Zafman, May 12, 1998: US05752071 (34 worldwide citation)

A function coprocessor for a processor having a first type of coprocessor interface is described. The function coprocessor includes a subprocessor and program memory coupled to the subprocessor. A data memory stores data from the processor in response to a first control signal. The data memory has m ...


7
Graham S Tubbs, David Dannenberg, Michael M Tso: Portable processing system with always on, always connected capability. Intel Corporation, Blakely Sokoloff Taylor & Zafman, May 20, 2003: US06567855 (26 worldwide citation)

A technique for providing a portable processing system with “always on, always connected” capability is provided. The portable processing system is equipped with two data communication devices, either or both of which may be implemented on a PC Card. The first communication device is for receiving d ...


8
Graham S Tubbs: Microcomputer with code conversion. Texas Instruments Incorporated, James T Comfort, John G Graham, December 20, 1977: US04064554 (24 worldwide citation)

An electronic digital processor which may be used in a hand-held calculator is implemented in a single MOS/LSI semiconductor chip. The processor includes a ROM for storing instruction codes, a RAM for storing data, an arithmetic unit for performing operations on data under control of micro-instructi ...


9
James E Ponder, Graham S Tubbs, Perry W Lou, Stephen A Farnow: Method of making CMOS device allowing three-level interconnects. Texas Instruments Incorporated, John G Graham, April 20, 1982: US04325169 (23 worldwide citation)

An improved CMOS device and method of making it are provided which utilize basically the standard N-channel self-aligned silicon gate structure and process (with implants for self-alignment), modified to include P-channel transistors and to allow three levels of interconnects. A P-type substrate is ...


10
Daniel L Essig, Luat Q Pham, Joe F Sexton, Graham S Tubbs: Digital multiplication circuit for use in a microprocessor. Texas Instruments Incorporated, Richard K Robinson, Leo N Heiting, Melvin Sharp, February 24, 1987: US04646257 (21 worldwide citation)

A digital multiplication circuit for a microprocessor utilizes a modified Booth algorithm for implementing the digital multiplication of two numbers and includes a Booth recoder for recoding the multiplier into a selected number, n, of Booth operation sets where n is a positive integer that equals o ...