From bulky behemoths to slim devices: How computers evolved into the powerful gadgets that we can scarcely live without today

IBM’s first PC could handle word processing and connect to a printer. — AFP

In two days – on Aug 12 – the IBM Model 5150, what many regard as the machine that kicked off the PC race, turns 39.

What made the Model 5150 unique is that it was based on an open architecture that made it possible for users to swap out parts, making the machine a hit with the tech community.