ARPANET Terminated / MP3 Is Born
Backbone:56Kbps CSNET, 1.544Mbps(T1) NSFNET
While the T3 lines were being constructed, the Department of Defense disbanded
the ARPANET, and it was replaced by the NSFNET backbone. The original 50Kbps lines
of ARPANET were taken out of service.
MP3 Is Born
The Moving Pictures Experts Group (MPEG), in conjunction with German company
Fraunhofer-Gesellshaft, implemented MP3 audio compression.
During the 1980s, MPEG had worked to develop a compression method to
transmit high-quality audio files. Different amounts of compression
were represented by "layer" algorithms, where the best quality was a
compression ratio of 1:4, known as Layer 1. The most efficient ratio
was Layer 3, compressing sound 1:12, or reducing the size of the audio
file 12 times compared with the original CD standard. This compression
became known as MPEG Layer 3, or MP3.