This article explains proportional integral derivative (PID) control, including the math behind it, with the use case of a linear servo motor.

Richard M. Stephenson, Conflict and Control Functions of Humor, American Journal of Sociology, Vol. 56, No. 6 (May, 1951), pp. 569-574 ...

When you need to use your notebook frequently for business, you need to be comfortable to be productive. The Lenovo ThinkPad features a brightness control function that enables you to make the ...