I was watching Terminator 2 the other day and noticed the character John Connor using a small piece of Atari hardware to work out the pin no. for a stolen credit card and steal cash.
It looked interesting so I went to the Atari museum website and found out it was their palmtop computer the Portfolio (1989), quite a neat little device for its day. Apparently running an 8088 chip at 4mhz.

http://www.atarimuseum.com/computers...portfolio.html