Michael L Cannon

US Patent:

42825806, Aug 4, 1981

Filed:

Sep 10, 1979

Appl. No.:

6/073868

Inventors:

Susan McGuire - Sacramento CA
Michael Cannon - Oakland CA

International Classification:

G06F 1502
G06F 1520

US Classification:

364734

Abstract:

A hand-held calculator is provided, having a keyboard, visual display, microprocessor, and power source. The microprocessor is provided with a program that enables the user to enter a sequence of letter grades through the keyboard and compute a running average of the sequence. The current result of the average is visually displayed. The program also allows the user to delete entries from the sequence and adjust the average correspondingly, so that errors in the sequence may be corrected. Further, the program enables the user to calculate running averages of subsequences of grades simultaneously with the overall sequence average, so that grade averages for individual students may be computed at the same time that the grand average over all students is being computed. The display may be switched to indicate either the sequence average or subsequence average at the user's command. A mode switch is further provided to allow the user to switch the device to either the normal calculator function or the grade averaging function.

US Patent:

43039154, Dec 1, 1981

Filed:

Jul 11, 1979

Appl. No.:

6/056706

Inventors:

George D'Angelo - Rancho Cordova CA
Michael Cannon - Oakland CA

International Classification:

G06F 314

US Classification:

340711

Abstract:

A portable hand held, electronic alphanumeric display device for assisting individuals to communicate with one another comprising a keyboard with function switches; a display section and assorted logic and power circuitry to sequentially display a worded message.