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A portable electronic dictionary in a hand-held housing which mounts a plurality of alpha-numeric displays and a keyboard. A plug-in module contains a microcomputer and a ROM which stores a plurality of pairs of sequences of alpha-numeric characters and is searched by a central processing unit in th

A portable electronic dictionary in a hand-held housing which mounts a plurality of alpha-numeric displays and a keyboard. A plug-in module contains a microcomputer and a ROM which stores a plurality of pairs of sequences of alpha-numeric characters and is searched by a central processing unit in the microcomputer under instructions stored as firmware in another ROM forming part of the microcomputer. One sequence of each stored pair is compared with a sequence which is entered into the keyboard and stored in a RAM also forming part of the microcomputer until a match is found. After one or more sequences have been entered into the keyboard and locations of matching pairs are stored in the microcomputer RAM, the pairs of stored sequences can be rolled across the display. Either sequence of each pair can be compared with a sequence entered into the keyboard.

대표청구항 ▼

An information storage and retrieval apparatus comprising: a hand-held housing comprising: a plurality of display means disposed on said housing, each for displaying an alpha-numeric character, and a keyboard on said housing and having a plurality of keys each associated with an alpha-numeric charac

An information storage and retrieval apparatus comprising: a hand-held housing comprising: a plurality of display means disposed on said housing, each for displaying an alpha-numeric character, and a keyboard on said housing and having a plurality of keys each associated with an alpha-numeric character or command for entering a sequence of alpha-numeric characters and commands, and producing command signals and sequences of character signals, each character signal identifying a character; memory means for storing characters entered by said keyboard; and a plug-in module removably, mechanically, and electrically connected with said hand-held housing, said plug-in module comprising: a central processor within said plug-in module connected to said display means and to said keys for searching said keyboard and causing the storage and display of entered and stored characters, at least a first read/only memory (ROM) within said plug-in module connected to said central processor for storing a plurality of pairs of sequences of alpha-numeric characters, said processor including means responsive to first and second given commands entered by said keyboard, for searching said first ROM to compare, one pair after another, one sequence of each pair with the sequence entered by said keyboard following entry of said first given command until a match is made, and for causing, subsequent to a match, the matching pairs of sequences to be displayed, the character in each said display varying in time without any manual operation of said keyboard so that the number of characters in said matching pairs can exceed the number of said display means, searching and causing means searching, following entry of said second given command, to compare said other sequence of each pair with said entered sequence until a match is made and causing said matching pairs of sequences to be displayed, a second read/only memory (ROM) within said plug-in module and connected to said processor for storing instructions for searching said first ROM and causing said pair of sequences to be displayed, and searching said keyboard, and said plug-in module permitting change of said pairs of sequences.