Moore law and Amdahl law

  Moore law :-

The observation that steady technological improvements inminiaturization leads to a doubling of the density of transistors on newintegrated circuits every 18 months. In the mid-1960s, Gordon Moore(born 1929), one of the founders of Intel corporation, observed thatthe density of transistors had been doubling every year, although thepace slowed slightly in the following years. The 18-month pattern heldtrue into the 21st century, though as technology approaches thepoint where circuits are only a few atoms wide, new technologies,possibly not involving transistors at all, may be required for furtherminiaturization. 

Amdahl law :-

Amdahl's law states that the performance improvement to be gained from using some faster mode of execution is limited by the fraction of the time the faster mode can be used.

       Amdahl's law, also known as Amdahl's argument,^[1] is named aftercomputer architect Gene Amdahl, and is used to find the maximum expected improvement to an overall system when only part of the system is improved. It is often used in parallel computing to predict the theoretical maximum speedupusing multiple processors. It was presented at the AFIPS Spring Joint Computer Conference in 1967.