Claims
- 1. The method of operating a programmable alphanumeric calculator system to select an initial command function, a plurality of calculator command functions, numeric digits and alphabetic characters from a plurality of keys on a keyboard, comprising the steps of:
- providing said initial command function from said keyboard to enter a control mode in which said calculator command functions may be entered from said keyboard,
- establishing a program mode from said keyboard to enable writing of a program as one of said plurality of calculator command functions,
- establishing an alpha entry sub-mode in the program mode for entry of a selected set of the order of twenty six alphabetic characters from a subset of keys numbering substantially fewer than twenty six, and
- entering alphabetic characters by two sequential keystrokes in the alpha entry mode from predetermined combinations of the keys in said subset of keys.
- 2. The method defined in claim 1, further comprising the step of:
- controlling the computer operation in the program mode from one of said calculator command functions entered by selected keyboard keys to enter numericl digits into a program for said calculator system in a single stroke per entry mode.
Parent Case Info
This application is a continuation, of application Ser. No. 06/729,559, filed May 2, 1985, now abandoned, which is a continuation-in-part of U.S. Ser. No. 459,998 filed Jan. 21, 1983 for "Computer Keyboards With Few Keys Designating Hundreds of Functions", now U.S. Pat. No. 4,547,860 granted Oct. 15, 1985. That application is incorporated herein in its entirety by reference.
US Referenced Citations (9)
Continuations (1)
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729559 |
May 1985 |
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Continuation in Parts (1)
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459998 |
Jan 1983 |
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