Teaching and entertainment device

Details Teaching and entertainment device Teaching and entertainment device

1981-01-06

1985-01-08

Hum, Vance Y.

Education and demonstration

Language

Spelling, phonics, word recognition, or sentence formation

434232, 273 1E, G09B 702, G09B 1300

Patent

active

044925824

ABSTRACT:
A teaching and entertainment device includes a desk-top console which supports a keyboard, an LCD display matrix, and a plug-in cartridge recepticle. A quartet of LCD drivers each control a quadrant of the display under the control of a first microprocessor. A plug-in cartridge is insertable into the console and contains a second microprocessor. Apparatus are provided for establishing a master/servant relationship of the second microprocessor over the first whenever the plug-in cartridge is present.

REFERENCES:
patent: 3697681 (1972-10-01), McCoy
patent: 4051605 (1977-10-01), Toal et al.
patent: 4093223 (1978-06-01), Wilke et al.
patent: 4117607 (1978-10-01), Gill
patent: 4177462 (1979-12-01), Chung
patent: 4180805 (1979-12-01), Burson
patent: 4232374 (1980-11-01), Chung et al.
patent: 4245405 (1981-01-01), Lien et al.
patent: 4310839 (1982-01-01), Schwerdt

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