a. In ancient times, fires were lit to use smoke as a signal over long distances.
b. Morse code was invented by an American called Samuel Morse.
c. The world’s first television images were shown to scientists in Scotland in 1926.
d. Radios were used to broadcast coded messages during the Second World War.
e. The World Wide Web was designed originally to make it easier for nuclear physics researchers to communicate.
f. Buying books and CDs over the Internet was made popular by the company Amazon.
g. The first mobile phones with cameras were sold in Japan.
h. Vinyl albums and tapes were replaced by CDs, which are now being replaced by MP3s.
i. The first English dictionary was written by Robert Cawdrey in 1644.
Արտավազդ Մկրտչյան 10 դասարան 