Convenience is a given when it comes to today's PCs, but the machine you're reading this on has come a long way. Major transformations date as far back as the early 19th century. Live Science gives the back-story on 10 revolutionary computers.
- The Difference Engine, 1822: Designed by Charles Babbage but not built until decades later, today's replicas show this math-table-generating machine to work flawlessly.
- ENIAC, 1946: This US Army computer weighed 30 tons, used 17,478 vacuum tubes, and consumed 150 kilowatts.
- IBM System/360, 1964: Met a huge demand for business computers and provided the market foundation for the modern computer industry.
- Datapoint 2200, 1970: Now forgotten, it was the project for which Intel developed its now ubiquitous microprocessor.
- Xerox PARC Alto, 1974: Has all the features of the computer you are using now, but Xerox got cold feet after inventing it and never put in on the market.
For the rest of the list, click the link below.