A few generationsThe difference between what constitutes a portable computer today and what was considered portable some 25 years ago is drastic.
The Apple MacBook Air is over 10 times lighter than either the TRS80 or the Osborne 1 and is easily 1000 of times more powerful.
The real question is where we go from here.
Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net, and TechRepublic.