Moore's law describes a long-term trend in the history of computing hardware. Since the invention of the integrated circuit in 1958, the number of transistors that can be placed inexpensively on an integrated circuit has increased exponentially, doubling approximately every two years.[1] The trend was first observed by Intel co-founder Gordon E. Moore in a 1965 paper.[2][3][4] It has continued for almost half of a century and is not expected to stop for another decade at least and perhaps much longer.[5]

Source

The observation made in 1965 by Gordon Moore, co-founder of Intel, that the number of transistors per square inch on integrated circuits had doubled every 18 months since the integrated circuit was invented. Moore predicted that this trend would continue for the foreseeable future.

Source

Concerning the increasing number of transistors in integrated circuits (e.g. CPU's of computers). Moore's law predicts an exponential growth, what means a doubling of the transistor density within two years.

Source

Coined in 1965 by Gordon Moore, future chairman and chief executive of Intel, it stated at the time that the of number transistors packed into an integrated circuit had doubled every year since the technology's inception four years earlier. In 1975 he revised this to every two years, and most people quote 18 months. The trend cannot continue indefinitely with current lithographic techniques, and a limit is seen in ten to fifteen years. However, the baton could be passed to nanoelectronics, to continue the trend (though the smoothness of the curve will very likely be disrupted if a completely new technology is introduced). From cmp-cientifica.com

Source

The observation made in 1965 by Gordon Moore, co-founder of Intel, that the number of transistors per square inch on integrated circuits had doubled every 18 months since the integrated circuit was invented. Moore predicted that this trend would continue for the foreseeable future.

Source

Coined in 1965 by Gordon Moore, future chairman and chief executive of Intel, it stated at the time that the of number transistors packed into an integrated circuit had doubled every year since the technology's inception four years earlier. In 1975 he revised this to every two years, and most people quote 18 months. The trend cannot continue indefinitely with current lithographic techniques, and a limit is seen in ten to fifteen years. However, the baton could be passed to nanoelectronics, to continue the trend (though the smoothness of the curve will very likely be disrupted if a completely new technology is introduced). [CMP]

Source

An emperical trend in the microelectronics industry for the number of circuits per chip to double roughly every 18 months.

Source