
AT&T establishes Bell
Laboratories to consolidate research and development for the Bell System's
telephone
companies.
Technology,
1947
The transistor (initially
known simply as a solid-state amplifier) demonstrated December
23
by Bell Laboratories physicists William Shockley, 38, John Bardeen, 40,
and Walter H. Brattain, 46, will replace the glass vacuum tube pioneered
by Bell Labs physicist H. D. Arnold in 1912. The tiny but rugged three-electrode
transistor will permit miniaturization of electronic devices such as computers,
radios, and television sets and lead to the development of guided missiles.
Energy, 1954
A solar
battery
developed by Bell Laboratories makes it possible to convert sunlight directly
to
electric
power.
Technology, 1955
The mesa introduced by Bell Telephone Laboratories is a new kind of transistor
Technology, 1984
Bell Laboratories announces
December 20 that it has perfected a one-megabit random access
memory
chip able to store on a tiny sliver of
silicon
four times as much
information
as anything now available.