Electronic book cover
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[0020]For illustrative purposes, the invention will be described in the form of an electronic calculator, although it may be adapted to include clocks, calendars, LED signs, flash memory-based audio / video players, digital photo frames, and many other electronic commodities.
[0021]With reference to FIG. 1, an electronic book cover 10 of the present invention is made of thick cardboard and bound to a block 12 of individual sheets. A vertical line of punched holes or slits 14 near the bound edge 16 is coupled with a metal binding spine 18 that threads the slits 14, thus holding the sheets 12 together. This “comb-bound” type of notebook increased in popularity due to the advent of desktop publishing at home offices and has proven to be a relatively simple method of binding a book.
[0022]The traditional, more rigid method of binding a book cover 10 involves a book block divided by a number of signatures threaded by yarn, wire or cable. The spine is flexibly connected to the book covers and...
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