Prompting calculator

Details Prompting calculator Prompting calculator

1974-02-04

1976-08-24

Shaw, Gareth D.

Communications: electrical

Digital comparator systems

35 8R, 35 9A, 235152, G06F 1502, G06F 906, G06F 314

Patent

active

039769755

ABSTRACT:
Disclosed is a self-contained data processing unit, preferably a calculator, which includes an output indicator directing the user which data or function entry the system next expects. After initial data and function entries, a permanent store memory generates successive coded representations of the next entry expected. These representations are visually indicated to the user by an output indicator such as a printer, light emitting diodes, or gas discharge tubes allowing the user to input in proper sequence a long series of inputs without referring to a user's guide.

REFERENCES:
patent: 3281959 (1966-11-01), Kobler
patent: 3308439 (1967-03-01), Tink
patent: 3533076 (1970-10-01), Perkins
patent: 3533078 (1970-10-01), Perkins
patent: 3575589 (1971-04-01), Neema
patent: 3596256 (1971-07-01), Alpert
patent: 3686637 (1972-08-01), Zachar
patent: 3701975 (1972-10-01), McBride
patent: 3702988 (1972-11-01), Haney
patent: 3768078 (1973-10-01), Williams
patent: 3781852 (1973-12-01), White
patent: 3821535 (1974-06-01), Nagakura

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