Science 285-289 Flashcards
a semiconductor device that emits visible light when an electric current is applied
light-emitting diode (LED)
made of a semiconductor called gallium arsenide (GaAs), a compound of gallium and arsenic
semiconductor laser
___ and ___ proposed inlaying all the transistors and diodes into a single chip of silicon or germanium; the circuit would be “wired” by tiny strips of metal inlaid into the face of the chip
Jack Kilby and Robert Noyce
device consisting of a single piece of semiconductor containing an entire electronic circuit is _____
integrated circuit
The wafer is coated with alternating layers of
three basic materials, which are ____, ____, and ____
- insulating material
- semiconducting material
- conducting material
true or false: integrated circuits are much cheaper to manufacture than separate components
true
the effects of the integrated-circuit revolution are far ________than the effects of the transistor revolution
greater
extremely small machines constructed from microscopic components
micromachines
a device that processes information using electronic circuits
computer
pieces of information
data
true or false: computers have drastically decreased man’s capacity to process information
false ; they increased it
simple counting
device
abacus
One of the first calculating machines built in modern times was a mechanical calculator built by ______
Blaise Pascal
designed complex mechanical calculators
Charles Babbage
The modern computer era is considered to have begun in 1946 with the completion of _____
ENIAC
