number of transistors inside a CPU chip.
Explanation: observation that the number of transistors in a dense integrated circuit doubles approximately every two years. The observation is named after Gordon Moore, the co-founder of Fairchild Semiconductor and Intel, whose 1965 paper described a doubling every year in the number of components per integrated circuit, and projected this rate of growth would continue for at least another decade. In 1975, Moore revised his estimate to a doubling every two years.This observation has held true for over 50 years and has driven the rapid pace of innovation in the semiconductor industry. Moore's Law is often used as a measure of the progress of the industry, and has been used to predict the future of semiconductor technology.The rate of improvement described by Moore's Law is not consistent across all measures of semiconductor progress. For example, while the number of transistors on a chip has continued to increase at a rapid pace, the speed of those transistors has not increased at the same rate. In fact, the speed of transistors has actually slowed down in recent years, due to the physical limitations of silicon.However, Moore's Law is still considered a valuable measure of progress in the semiconductor industry, and is used to predict future trends. For example, it is often used to estimate the amount of time it will take for a new technology to become economically viable.