Easily graspable numerical expression display apparatus

Details Easily graspable numerical expression display apparatus Easily graspable numerical expression display apparatus

2011-03-29

2011-03-29

Malzahn, David H (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Having specialized input

Reexamination Certificate

active

07917558

ABSTRACT:
When a numerical expression (FIG.6(a)) is inputted to a mathematical calculator (1) and then a rough display key (27) is depressed, calculation units composing the numerical expression are converted to display blocks, whereby the numerical expression is displayed in a natural expression form on a display (3) and a rough map (M) is also displayed in which the display blocks are disposed at positions corresponding to those of the calculation units of the numerical expression in the natural expression form (FIG.6(b)). A calculation unit of the numerical expression to be edited is indicated by a cursor (30) and a corresponding display block of the rough map is displayed emphatically in the rough map (FIG.6(c)).

REFERENCES:
patent: 5067102 (1991-11-01), Eisenstein
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patent: 5432721 (1995-07-01), Satoh
patent: 5481626 (1996-01-01), Matsubayashi
patent: 6795838 (2004-09-01), Kataoka
patent: 2007/0150863 (2007-06-01), Katayama
patent: 2008/0066052 (2008-03-01), Wolfram
patent: 5-324565 (1993-12-01), None
patent: 7-287705 (1995-10-01), None
Japanese Office Action dated Oct. 19, 2010 (and English translation thereof) in counterpart Japanese Application No. 2006-085535.

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