The first Walkman model, TPS L2

The original Walkman was a personal tape player built in 1978 by the Sony
corporation in Japan as an alternative to the home stereo system. It allowed
the listener to carry music with them and listen to it through small lightweight headphones.The Walkman was first introduced and marketed on July 1,1979.

Intelsat 1 F-1, known popularly as Early Bird (above), was the first
communications satellite developed and launched for commercial
use. It was launched on a Delta D rocket from Cape Canaveral,
Florida and positioned in geostationary orbit over the Atlantic. It
had a capacity of 240 telephone links or one television channel.The
satellite was originally Designed to last for 18 months, it was in use
for 3½ years, even being reactivated briefly to celebrate Intelsat’s
20th anniversary in 1984.

The Early Bird satellite was launched on a Delta
D rocket from Cape Canaveral, Florida.