Inventions of the XX and XIX centuries

1.

Inventions of the XX and XIX
centuries.

2.

Tetris
More than thirty years ago, the Pentamino
puzzle was popular in the USSR: on a
checkered piece of paper, it was necessary to
correctly fold the curly blocks of five squares.

3.

Mobile phone
The first phone was demonstrated at the end of
the 19th century, and the first mobile phone
appeared in the 70s of the twentieth century.

4.

Computer
Today it is difficult to imagine life without a
computer, laptop or tablet. But until recently,
such devices were used exclusively for
scientific purposes.

5.

Electric vehicle
In the last third of the nineteenth
century, the world was gripped by a
real "electric fever".

6.

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