|MLA Citation:||Bloomfield, Louis A. "Question 698"|
How Everything Works 21 Jan 2018. 21 Jan 2018 <http://howeverythingworks.org/print1.php?QNum=698>.
But electronic "circuits" are much more modern. Here the word circuit is equivalent to "device," "board," or "chip." Such electronic devices date to somewhere around the beginning of the twentieth century. As radio developed, with tube amplifiers and other electronic components, so did these circuits. Modern electronic systems place many of the components involved in an electronic device on a single sheet of plastic or fiberglass and many of the components on that board may exist on the surface of one or more tiny silicon wafers. These single wafer circuits, called integrated circuits, were invented in 1959 by Texas Instruments and became commercial products at Fairchild Semiconductors in 1965.