New technologies

New technologies

•CDs were sold for the first time in1982.
•CDs were first sold in 1982.
So, before 1982,
people couldn’t listen to CDs.

•DVDs
•So,
were invented in1995.
before 1995,
people couldn’t watch films on DVDs.

•The first programmes on television
•So,
were broadcast in1928.
before 1928,
people couldn’t watch television.

•Personal computers
•So,
were
in 1977.
before 1977,
people couldn’t use computers at home.
first
for the first time
used
•Personal computers were used
in 1977.