Fred W Wenninger

41786335, Dec 11, 1979

Jun 1, 1977

5/802323

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 302

364709

An adaptable programmable calculator is provided by employing modular read-write and read-only memory units 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, 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. The input and output units include a keyboard input unit having a plurality of alphabetic, numeric, and funtion keys for entering alphameric information, including algebraic statements, into the calculator, a magnetic card reading and recording unit capable of bidirectionally transferring information between an external magnetic card and the calculator, a solid state display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements, and a printer unit capable of printing on thermally sensitive paper every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. At least one of the function keys of the keyboard input unit is a dual function key. One of the dual functions is selected by actuating the key once, and the other one of the dual functions is selected by actuating the key twice.

41527739, May 1, 1979

Jun 1, 1977

5/802291

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 748

364736

An adaptable programmable calculator is provided by employing modular read-write and read-only memory units 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, 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. The input and output units include a keyboard input unit with a plurality of sections capable of being defined by plug-in read-only memory modules and stored programs added by the user, a magnetic card reading and recording unit capable of bidirectionally transferring information between an external magnetic card and the calculator, a display unit capble of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements, and a printer unit capable of printing on thermally sensitive paper every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. The keyboard input unit includes a plurality of operand keys and a plurality of operator keys for entering algebraic statements specifying selected arithmetic operations, including relational operations, into the calculator. The operations specified in a particular algebraic statement are processed in accordance with a predetermined hierarchal priority of operations, all relational operations performed last.

40756793, Feb 21, 1978

Dec 8, 1975

5/638381

Chris J. Christopher - Loveland CO
Fred W. Wenninger - Loveland CO
Donald E. Morris - Loveland CO
Wayne F. Covington - Loveland CO
Jerry B. Folsom - Loveland CO
Joseph W. Beyers - Loveland CO
John H. Nairn - Longmont CO
Jeffrey C. Osborne - Longmont CO

Hewlett-Packard Company - Palo Alto CA

G06F 302
G06F 918

364200

An adaptable programmable calculator employs modular read-write and read-only memories separately expandable to provide additional program and data storage functions within the calculator oriented toward the environment of the user, and an LSI NMOS central processing unit, capable of handling sixteen-bit parallel binary operations, binary-coded-decimal arithmetic, sixteen-bit parallel input/output operations, two-level interrupt from up to sixteen input/output devices, and a direct memory access channel. The input/output units include a keyboard input unit having a full complement of alphanumeric keys, a magnetic tape cassette reading and recording unit capable of bidirectionally transferring programs and data between the calculator and a magnetic tape, a 32-character solid state output display unit capable of displaying every alphabetic and numeric character and many other symbols individually or in combination, and a sixteen-column alphanumeric thermal printer for printing results of computations, program listings, messages generated by the user and the calculator itself, and error conditions encountered during use of the calculator. All of these input/output units are included within the calculator itself. Many other external input/output units may be employed with the calculator.

41582330, Jun 12, 1979

Jun 1, 1977

5/802304

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 739

364754

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, 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. The input and output units include a keyboard for entering alphameric information, including algebraic statements, into the calculator, a magnetic card reading and recording unit, a solid state output display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements, and a printer unit capable of printing on thermally sensitive paper every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. The calculator includes an implied multiplication feature whereby algebraic statements entered into the calculator are entered without the multiplication operator but are, nevertheless, processed as if the multiplication operator were present at the appropriate points in those algebraic statements.

41625323, Jul 24, 1979

Jun 1, 1977

5/802222

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06K 1518
G06F 314

364710

An adaptable programmable calculator is provided by employing modular read-write and read-only memory units 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, and an input-output control unit for 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. The input and output units include a keyboard input unit, a magnetic card reading and recording unit, a solid state multi-character output display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements, and a thermal printer unit. The keyboard input unit includes a display control key for entering a DISPLAY statement into the calculator and an execute control key for initiating execution of a line of alphameric statements entered into the calculator. The DISPLAY statement may be manually or programmably employed to cause the calculator to display the results of arithmetic expressions, alphameric messages, or the contents of any memory register without thereby altering the contents thereof.

40285383, Jun 7, 1977

Sep 30, 1974

5/510921

Emil Edward Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 738
G06F 1502

235156

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. A keyboard input unit with a plurality of sections capable of being defined by plug-in read-only memory modules and stored programs added by the user, a magnetic card reading and recording unit, a solid state output display unit, and an output printer unit are included among the input and output units. The calculator employs a high level algebraic keyboard language permitting the user to enter a line of one or more alphameric statements into the calculator from the keyboard input unit while visually observing an alphameric display of the line being entered to check for errors therein, permitting the user to cause the entered lines to be immediately executed by the calculator and/or stored as part of a program within the memory unit, and permitting the user to subsequently recall the executed and/or stored line, so that it may be reinspected, reevaluated and if necessary, edited and executed or reexecuted. The calculator also employs a compiler for converting each line entered into the calculator in the high level keyboard language into a past-fix polish code and an uncompiler for regenerating in the high-level keyboard language any entered line converted to the post-fix polish code.

41582314, Jun 12, 1979

Jun 1, 1977

5/802302

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 1312

364710

An adaptable programmable calculator is provided by employing modulr read-write and read-only memory units 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, an input-output control unit for 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. The input and output units include a keyboard input unit, a magnetic card reading and recording unit, a solid state display unit capable of displaying every alphabetic and numeric character and many other symbols individually and in a line of one or more alphameric statements, and a printer unit capable of printing on thermally sensitive paper every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. A printed listing of the line number and content of each line of one or more alphameric statements stored as part of a program in the read-write memory unit may be obtained by means of a LIST control key of the keyboard input unit. The user may also obtain, directly or as part of any program listing, a printed indication of the number of nondedicated storage registers within the calculator read-write memory that are currently available to the user for information storage.

41527690, May 1, 1979

Jun 1, 1977

5/802294

Emil E. Olander - Fort Collins CO
Rex L. James - Loveland CO
Ivar W. Larson - Loveland CO
Wayne F. Covington - Loveland CO
Jack M. Walden - Loveland CO
Robert E. Watson - Loveland CO
Francis J. Yockey - Loveland CO
Fred Wenninger - Loveland CO
Homer C. Russell - Berthoud CO

Hewlett-Packard Company - Palo Alto CA

G06F 302

364709

An adaptable programmable calculator is provided by employing modular read-write and read-only memory units 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, an input-output control unit for 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. The input and output units include a keyboard input unit a magnetic card reading and recording unit, a solid state display unit capable of displaying every alphabetic and numeric charater and many other symbols individually and in a line of one or more alphameric statements, and a printer unit capable of printing on thermally sensitive paper every alphabetic and numeric character and many other symbols individually and in alphameric statements or messages. A data entry statement may be programmably employed to halt execution of a program by the calculator to permit the user to enter one or more items of data, following which the data is automatically stored in a register or registers specified in the data entry statement. One of a plurality of flags internal to the calculator is set if the user calls for resuming execution of a program whose execution has been halted to permit the entry of data, if no data is entered by the user, thus permitting termination of the entry of successive items or data, the exact number of which is unknown at the time the program is written.