Modern Practice
Much equipment which for most of the 20th century would have used electromechanical devices for control, beginning from the last third of the century have come to use less expensive and more reliable integrated microcontroller circuits containing ultimately a few million transistors and a program to carry out the same task through logic, with electromechanical components only where moving parts, such as mechanical electric actuators, are a requirement. Such chips have replaced most electromechanical devices, are used in most simple feedback control systems, and appear in huge numbers in everything from traffic lights to washing machines.
Read more about this topic: Electromechanics
Famous quotes containing the words modern and/or practice:
“The chief element in the art of statesmanship under modern conditions is the ability to elucidate the confused and clamorous interests which converge upon the seat of government. It is an ability to penetrate from the naïve self-interest of each group to its permanent and real interest.... Statesmanship ... consists in giving the people not what they want but what they will learn to want.”
—Walter Lippmann (1889–1974)
“Fine art, that exists for itself alone, is art in a final state of impotence. If nobody, including the artist, acknowledges art as a means of knowing the world, then art is relegated to a kind of rumpus room of the mind and the irresponsibility of the artist and the irrelevance of art to actual living becomes part and parcel of the practice of art.”
—Angela Carter (1940–1992)