公开(公告)号：WO1990016032A1

公开(公告)日：1990-12-27

申请号：PCT/US1990002953

申请日：1990-05-24

Applicant: GRID SYSTEMS CORPORATION

Inventor： GRID SYSTEMS CORPORATION ,  HAWKINS, Jeffrey, C. ,  SANFORD, Lindsay ,  MCNAMARA, James, H. ,  DULANEY, Kenneth, L.

IPC: G06F15/20

CPC classification number: G06F3/0481 ,  Y10S345/901

Abstract: A system for providing keystroke data to an application program without utilizing a keyboard that simultaneously displays application program graphics and a keyboard representation on different segments of a screen (12). Keys are selected by touching the screen (12t) at the location of the graphic representation of the key on the screen (12b). The system is transparent to the application program.

公开(公告)号：WO1990016030A1

公开(公告)日：1990-12-27

申请号：PCT/US1990002986

申请日：1990-05-30

Applicant: GRID SYSTEMS CORPORATION

Inventor： GRID SYSTEMS CORPORATION ,  HAWKINS, Jeffrey, C. ,  DULANEY, Kenneth, L. ,  DALY, John, J. ,  MC NAMARA, James, H. ,  COLE, James, F.

IPC: G06F15/00

CPC classification number: G06F1/3228 ,  G06F9/463

Abstract: A hand held computer (10) of a type used for such activities as taking inventory, recording signatures on delivery, keeping a route agenda, etc. has a large screen (12) 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 (12), enables character recognition for items printed on the screen (12) using a conductive stylus (29), 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.