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Electronic system pocketbook apparatus

  • US 5,109,354 A
  • Filed: 03/30/1990
  • Issued: 04/28/1992
  • Est. Priority Date: 03/31/1989
  • Status: Expired due to Fees
First Claim
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1. An electronic system pocketbook apparatus comprising:

  • a foldable and portable main body having the form of a book and composed of a front cover portion, a rear cover portion and a back portion connecting the front and rear cover portions together in a manner to allow relative movement of said cover portions between a closed position in which said cover portions face one another in the manner of the covers of a closed book and an open position in which said cover portions are separated from one another in the manner of the covers of an open book, circuit means including a CPU and data processing units housed in at least one of said cover portions, and a display unit housed in one of said cover portions;

    an expansion card holder mounted on said main body for holding at least one expansion card;

    an expansion card held by said expansion card holder and containing an electric circuit; and

    communicating means connecting said circuit of said expansion card via said expansion card holder to said circuit means for performing data transmission/reception between said held expansion card and said main body via said expansion card holder.

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