The Duos were wonderful machines for sub-notebook fans but largely failed to win the support that notebook buyers gave to Apple's standard, fully featured PowerBooks. The 210 and 230 were killed off 12 months after launch with the arrival of the 250, which offered an active-matrix monochrome screen and more hard drive space. The following April, it too was given the chop, replaced by the 280 and 280c, the latter doing for the 270c. The 280 and 280c dropped the old 68030 CPU in favour of the faster 68LC040.

In the summer of 1995, Apple introduced the Duo 2300c, the first PowerPC-equipped Duo. It was killed in February 1997. The following May, Apple introduced the PowerBook 2400, a sub-notebook co-designed with IBM. ®

There's much more on Apple's past products at the Apple History website

IT is evolving the UK workforce, read more here

link..........http://www.reghardware.co.uk/2006/08/11/forgotten_tech_apple_pb_duo/