Intel's first microprocessor, the 4004, is 40 years old today.
On November 15, 1971, the chip was mentioned for the first time publicly in a half-page ad printed in Electronic News. Intel was just two years old back then and it was first to offer a CPU that was integrated entirely in one package.
It's impressive to behold the increase in computing power in such a short time.
According to Intel, current 32 nm CPUs are about 5000 times faster than the original 4004 and each transistor uses about 5000 times less energy, while the price of each transistor dropped by about 50,000 times.
Also, look at this chart and marvel at Moore's Law.