Boots – shoes – and leggings
Patent
1975-05-12
1978-02-14
Atkinson, Charles E.
Boots, shoes, and leggings
361380, G06F 738
Patent
active
040741184
ABSTRACT:
An electronic calculator disclosed herein is comprised mainly of a multi-digit liquid crystal display unit, a mechanical contact type keyboard unit and a semiconductor circuit unit including a computation circuit, logical control circuit, storage circuit, program memory circuit, etc., these units being all incorporated on a single plate of electrically insulating material. One of a pair of spaced apart electrically insulating plates forming a capacity for the liquid crystal composition is of a length sufficient to support all the constitutional units, which has two major surfaces one for supporting the keyboard unit and the other for supporting the semiconductor circuit unit. Connection between oppositely disposed keyboard unit and semiconductor circuit unit is accomplished by any conventional method, for example, multi-terminal connector, conductive material printing, through holes, wire bonding and so on.
REFERENCES:
patent: 3676656 (1972-07-01), Schmidt
patent: 3819921 (1974-06-01), Kilby et al.
R. K. Johnson, Applicance, Apr. 1972, Ragen Produces Mini-Calculator, pp. 41-44.
Hashimoto Shintaro
Katsui Saburo
Washizuka Isamu
Atkinson Charles E.
Sharp Kabushiki Kaisha
LandOfFree
Calculator construction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Calculator construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calculator construction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-526430