PenLite

The PenLite is a early tablet based on the PowerBook Duo chassis that was prototyped in 1992, but cancelled by management at Apple Computer due to potential market competition with the Newton.
==Development==
Early development prototypes, codenamed Scribe, were ready as early as 1989. A small number of near-final pre-production units, codenamed PenMac, were sent to Japan in Fall 1992 for testing. The test units ran System 7.1 running on a 25 MHz Motorola 68030 processor,Apple tablet - scribe - penlite - penmac by Thomas Gilley, YouTube. 2014-11-11. like the PowerBook Duo 210.Macintosh PowerBook Duo 210: Technical Specifications, Apple Support. 2017-07-26. The near-final prototypes were compatible with existing Apple peripherals, such as the Duo MiniDock.Apple PenLite, un prototipo de TabletMac de 1993, subastado en eBay by Pedro Aznar, AppleSfera (Spanish). 2007-08-20. An extension called PenMac allowed the system to accept stylus-based input.Apple Lore: PenMac by Arno Gourdol. 2019-02-09. The stylus and digitizer were developed by Gazelle Graphics Systems,Macintosh PowerBook Duo Tablet Computer (code named "PenLite") by Gary L. Embler, Inspirics. 2002-10-14. which was acquired by Logitech in September 1993.Logitech Acquires Gazelle Graphics by Jack Searles, Los Angeles Times. 1993-09-28. The digitizer provided input data to the internal Apple Desktop Bus through a microcontroller.
The project was initiated by Tom Gilley at the Apple Advanced Technology Group and taken to Sue King at the portables division. Development was led by Paul Mercer, with design engineering by Gary Embler. Arno Gourdol was involved with development of the PenMac input extension. Backlight power supply components were developed in collaboration with Jim Williams at Linear Technology to provide low elecromagnetic interference with the digitizing sensor. After the project was cancelled in August 1993, the technology was licensed to Assistive Technology under the Macintosh clone licensing program and evolved into the PowerPC-based Freestyle tablet.Pen Lite: The Apple Tablet that Newton squashed, My Apple Newton. 2010-03-11.
==Court case==
In 2012, Gilley was subpoenaed to provide a video demonstration of the PenLite to show the history of Apple's tablet development in a patent court case involving Samsung.Tom Gilley, LinkedIn. Accessed 2021-05-10.
===Video demonstrations===
Apple tablet with pen late 80's, early 90's|(short demo)
Apple tablet - scribe - penlite - penmac|(long demo)
Apple tablet editing text with pencil|(text recognition)
==References==
==See also==
*Vademecum
==External links==
*Apple PenLite prototype, 1992 by Marcin Wichary at Flickr (2020-01-22)
*Apple PenLite at the Higher Intellect Vintage Computing Wiki
*Apple PenLite at Wikimedia Commons
* at Wikipedia
===Articles===
*Apple Has Been Struggling with the Stylus for 20 Years by Ernie Smith at Vice (2017-06-30)
*Exclusive Picture Of Unlaunched Apple Tablet (circa 1990) by Michael Arrington at TechCrunch (2009-10-27)
Category:Unreleased Apple hardware