Patents by Inventor Frank E. Cada

Frank E. Cada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Programmable calculator including program variable initialization means and definition means array
    Patent number: 4546448
    Abstract: A programmable calculator utilizes an initialization key for setting all program variables, including array variables that are stored as part of a program in the calculator memory, to a predetermined initial value.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: October 8, 1985
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Chris J. Christopher, Wayne F. Covington, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe
  • Electronic computing apparatus employing basic language
    Patent number: 4366553
    Abstract: An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit. Also the calculator may be operated manually by the user from an alphanumeric keyboard input unit or automatically by a program stored within the memory unit to perform calculations and provide an output indication of the results thereof. It may also be employed to load programs into the memory unit from the keyboard input unit.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: December 28, 1982
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Chris J. Christopher, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe
  • Programmable calculator having structure for controlling an x-y plotter
    Patent number: 4322816
    Abstract: An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit.
    Type: Grant
    Filed: June 12, 1980
    Date of Patent: March 30, 1982
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Chris J. Christopher, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe
  • Programmable calculator having extended input/output capability
    Patent number: 4127897
    Abstract: An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: November 28, 1978
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Chris J. Christopher, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe
  • Programmable calculator including terminal control means
    Patent number: 4126898
    Abstract: An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: November 21, 1978
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Chris J. Christopher, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe
  • Programmable calculator
    Patent number: 4012725
    Abstract: An adaptable programmable calculator is provided by employing a modular read-write and read-only memory unit capable of being expanded to provide the calculator with additional program and data storage functions oriented towards the environment of the user, a central processing unit capable of performing both serial binary and parallel binary-coded-decimal arithmetic, and an input-output control unit capable of bidirectionally transferring information between the memory or central processing units and a number of input and output units. The memory, central processor, and input-output control units are controlled by a microprocessor included in the central processing unit.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: March 15, 1977
    Assignee: Hewlett-Packard Company
    Inventors: Richard M. Spangler, Eugene V. Burmeister, Frank E. Cada, Wayne F. Covington, Chris J. Christopher, Myles A. Judd, Freddie W. Wenninger, Robert E. Watson, Kent W. Simcoe