EO Personal Communicator

Among the EO customers AT&T claimed were: New York Stock Exchange, Andersen Consulting, Lawrence Livermore Laboratories, FD Titus & Sons and Woolworths.

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.

Both are powered by the AT&T Hobbit chip, created by AT&T specifically for running code written in the C programming language.

The devices come 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.

Widely praised for its simplicity and ease of use, the OS did not gain widespread use.

Comparison of the EO 440 Personal Communicator (1993) and the Amazon Kindle 2 e-book reader (2009). Both have reflective displays (no backlight). The EO has a liquid crystal display, the Kindle an electrophoretic one.