EO Personal Communicator
EO Communicator 440/880
|Release date||April 1993|
The EO was an early commercial tablet computer created by Eo, Inc. (later acquired by AT&T Corporation), and released in April 1993. Eo (Latin for "I go") was the hardware spin-out of GO. Officially named the AT&T EO Personal Communicator, it was similar to a large personal digital assistant with wireless communications, and competed against the Apple Newton. The unit was produced in conjunction with the Frog design, Matsushita, Olivetti and Marubeni corporations.
Eo, Inc., 52 percent owned by AT&T, shut down operations on July 29, 1994, after failing to meet its revenue targets and to secure the funding to continue.
Product specifics 
Two models, the Communicator 440 and 880, were produced and measured about the size of a small clipboard. Both were powered by the AT&T Hobbit chip, created by AT&T specifically for running code from the C programming language. They also contained a host of I/O ports - modem, parallel, serial, VGA out and SCSI. The device came with a wireless cellular network modem, a built-in microphone with speaker and a free subscription to AT&T EasyLink Mail for both fax and e-mail messages.
Perhaps the most interesting part was the operating system, PenPoint OS, created by GO Corporation. Widely praised for its simplicity and ease of use, the OS never gained widespread use. Also equally compelling was the tightly integrated applications suite, Perspective, licensed to EO by Pensoft.
See also 
- Cerda, Michael (September 11, 1995). "EO Interest Document". Retrieved May 15, 2009.
- EO 440 and 880 specs
- The EO 440 And EO 880 (subscription required)
- EO 440 receives one of 1993 Byte Awards
- Personal retrospective about working for EO
- Jerry Kaplan. (1994). Startup : a Silicon Valley adventure. New York: Penguin Books. ISBN 0-14-025731-4.
- Ken Maki. (1993). The AT&T EO travel guide. New York: Wiley. ISBN 0-471-00783-8.
- "Enter the Phablet: A History of Phone-Tablet Hybrids". PCmag, February 13, 2012, Sasha Segan.
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