The first direct-dialed long distance telephone call is made.
1948
33-RPM vinyl LP records are introduced.
Ampex Corp. sells the first magnetic tape recorders in the United States.
“Gone With the Wind" is transmitted electronically to the Library of Congress in less than 2.5 minutes.
TV set sales increase more than 500 percent compared to 1947 sales.
The first cable TV systems in the United States are developed.
The first Citizen's Band radios debut.
The basic concepts of digital communication are unveiled.
The first computer to use stored programs is built.
1947
William Shockley, Hohn Bardeen and Walter Brattain invent the transistor at Bell Telephone Laboratories.
1946
The first mobile telephone service begins.
The first electronic computer, ENIAC, is demonstrated.
John Mullin demonstrates improved German-made Magnetophon magnetic tape recorders for a U.S. engineering convention.
The FCC allocates Citizen’s Band Radio frequencies.
1945
Unlimited output of radios and televisions is permitted after the end of World War II.
Arthur C. Clarke proposes a geosynchronous communications satellite system in space where these satellites orbit. Twenty years later it is dubbed the "Clarke Belt" in his honor.
Grace Murray Hopper coins the term "bug" to describe a computer fault.
1942
TV equipment production is banned during World War II.
The first all-electronic digital computer is completed.
The first stereo tape recordings are made.
1941
Commercial FM operation begins.
The FCC adopts the NTSC standard and TV broadcasts begin.
