Boots – shoes – and leggings
Patent
1990-01-31
1991-11-19
Shaw, Dale M.
Boots, shoes, and leggings
36470906, G06F 300
Patent
active
050671022
ABSTRACT:
A calculator programmed for displaying in textbook format a mathematical expression as it is entered. This format is the way the expression would appear if presented in a textbook or if written with pencil and paper. As a key is pressed, the associated object, such as an alpha character or mathematical symbol, appears on the display screen in textbook format. A cursor is provided which responds to currently entered objects for indicating where the next object to be entered will be displayed. In displaying objects, the calculator is also context sensitive. It responds to currently entered objects by controlling the display of the next object to maintain the textbook format of the expression. Other features include syntax checking of the mathematical expression as its objects are being entered, and implicit entering and displaying of objects in response to entry of a predetermined pattern of objects.
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patent: 4507743 (1985-03-01), Haneda et al.
patent: 4580235 (1986-04-01), Yanagawa
patent: 4811257 (1989-03-01), Sumitani et al.
patent: 4821228 (1989-04-01), Wickes et al.
patent: 4852057 (1989-07-01), Patton
Hewlett--Packard Company
Mai Tan V.
Shaw Dale M.
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