A Brief History of Tablet PCs
A Brief History of Tablet PCs
In the late 1980s, early pen computer systems generated a lot of excitement and there was a time when it was thought they might eventually replace conventional computers with keyboards. After all, everyone knows how to use a pen and pens are certainly less intimidating than keyboards.
Pen computers, as envisioned in the 1980s, were built around handwriting recognition. In the early 1980s, handwriting recognition was seen as an important future technology. Nobel prize winner Dr. Charles Elbaum started Nestor and developed the NestorWriter handwriting recognizer. Communication Intelligence Corporation created the Handwriter recognition system, and there were many others.
In 1991, the pen computing hype was at a peak. The pen was seen as a challenge to the mouse, and pen computers as a replacement for desktops. Microsoft, seeing slates as a potentially serious competition to Windows computers, announced Pen Extensions for Windows 3.1 and called them Windows for Pen Computing. Microsoft made some bold predictions about the advantages and success of pen systems that would take another ten years to even begin to materialize. In 1992, products arrived. GO Corporation released PenPoint. Lexicus released the Longhand handwriting recognition system. Microsoft released Windows for Pen Computing. Between 1992 and 1994, a number of companies introduced hardware to run Windows for Pen Computing or PenPoint. Among them were EO, NCR, Samsung, Dauphin, Fujitsu, TelePad, Compaq, Toshiba, and IBM. Few people remember that the original IBM ThinkPad was, as the name implies, slate computers.
The computer press was first enthusiastic, then very critical when pen computers did not sell. They measured pen computers against desktop PCs with Windows software and most of them found pen tablets difficult to use. They also criticized handwriting recognition and said it did not work. After that, pen computer companies failed. Momenta closed in 1992. They had used up US million in venture capital. Samsung and NCR did not introduce new products. Pen pioneer GRiD was bought by AST for its manufacturing capacity. AST stopped all pen projects. Dauphin, which was started by a Korean businessman named Alan Yong, went bankrupt, owing IBM over million. GO was taken over by AT&T, and AT&T closed the company in August 1994 (after the memorable “fax on the beach” TV commercials). GO had lost almost US million in venture capital. Compaq, IBM, NEC, and Toshiba all stopped making consumer market pen products in 1994 and 1995.
By 1995, pen computing was dead in the consumer market. Microsoft made a half-hearted attempt at including “Pen Services” in Windows 95, but slate computers had gone away, at least in consumer markets. It lived on in vertical and industrial markets. Companies such as Fujitsu Personal Systems, Husky, Telxon, Microslate, Intermec, Symbol Technologies, Xplore, and WalkAbout made and sold many pen tablets and pen slates.
That was, however, not the end of pen computing. Bill Gates had always been a believer in the technology, and you can see slate computers in many of Microsoft’s various “computing in the future” presentations over the years. Once Microsoft reintroduced pen computers as the “Tablet PC” in 2002, slates and notebook convertibles made a comeback, and new companies such as Motion Computing joined the core of vertical and industrial market slate computers specialists.
The primary reason why the Microsoft-specification Tablet PC is reasonably successful whereas earlier attempts were not has two reasons. First, the technology required for a pen slate simply wasn’t there in the early 1990s. And second, the pen visionaries’ idea of replacing keyboard input with handwriting (and voice) recognition turned out to be far more difficult than anticipated. There were actually some very good recognizers that are still being used today, but they all require training and a good degree of adaptation by the user. You can’t just scribble on the screen and the computer magically understands everything. With the Tablet PC, Microsoft downplayed handwriting recognition in favor of “digital ink” as a new data type. This was a very wise decision.
