05133076 is referenced by 137 patents and cites 11 patents.

A hand held computer of a type used for such activities as taking inventory, recording signatures on delivery, keeping a route agenda, etc. has a large screen and preferably is without a built in keyboard. The tablet type computer is thin in profile, light in weight and is easily carried and used. Programming in the computer enables an operator to select from various forms available for display on the screen, enables character recognition for items printed on the screen using a conductive stylus, enables the recording in memory of signatures, graphics or any other material entered on the screen, and enables other convenient functions. Certain preferred features of the computer enable it easily to be converted into a full function desk top computer with a keyboard, expansion module and stand.

Title
Hand held computer
Application Number
7/365147
Publication Number
5133076
Application Date
June 12, 1989
Publication Date
July 21, 1992
Inventor
James F Cole
Palo Alto
CA, US
James H McNamara
Santa Cruz
CA, US
John J Daly
San Carlos
CA, US
Ken L Dulaney
Redwood City
CA, US
Jeff C Hawkins
Redwood City
CA, US
Agent
Townsend & Townsend
Assignee
Grid Systems Corporation
CA, US
IPC
G06F 15/76
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