Brief History of Computer

The history of mankind is accelerating. Of the four billion years of existence of our planet, all known species are less than one hundred million years, humans have past less than a million years, the oldest picture on the wall of a cave is of 30,000 years.And yet what a comparison between the first computer (50 tons, 25 kW, a few thousand memory locations, hundreds of instructions per second) with the micro processor Pentium (a few grams, 25 watts, 8 to 32 megabytes of memory, 100 million instructions per second.) And everything suggests that in 10 years as the Pentium appear outdated as the first computer.In the early 50′s, a market research famously estimated the world market at fifty machines.
http://thecustomizewindows.com/2011/01/major-trends-of-evolution-of-the-computer-1950-2010/