The document summarizes several important inventions throughout history: - The refrigerator was invented in 1876 by Charles Tellier to preserve perishable foods. - The automobile first appeared in 1886 when Karl Benz created the first car, which Henry Ford later mass produced using an assembly line. - Penicillin was discovered in 1928 by Alexander Fleming and is an antibiotic that treats bacterial infections by inhibiting their cell wall synthesis. - The Internet began taking shape in the 1960s and was used by the US Army in the 1970s to connect computers, now serving as a global communication and information medium. - Cell phones and computers have become ubiquitous tools that condition modern life through accessing information and communicating from anywhere with a touch.

1. Inventions that marked history
REFRIGERATOR: When it appeared? In 1876. Who invented it? Charles Tellier, French
engineer. Purposes that it fulfills: Allow to extend the good state of perishable foods at
optimum temperatures.
CAR: When it appeared? The automobile, as it is known today appeared for the first time in
1886. Who invented it? This first car was created by Karl Benz and shortly afterwards other
pioneers presented their models until in 1910 Henry Ford began to produce them in
assembly line. Purposes that it fulfills: Allow to travel distances in the shortest possible time
by land.
PENICILLIN: When it appeared? In 1928. Who discovered? Alexander Fleming discovered it.
Purposes that it fulfills: Treat infections caused by bacteria. Functioning: It is an antibiotic
for which the mechanism of action is not fully known. Its bactericidal character derives from
its intervention as inhibitor of the process of synthesis of bacteria. It weakens the bacterial
wall and helps to remove it from the body.
INTERNET: When it appeared? Internet began to take shape in the sixties, being able to be
considered its year of appearance in 1983. Who started to manage it? At the beginning of
the decade of the seventies, it was the United States Army of North America that began to
use it in order to connect in a network the computers with which they were equipping
their different centers. Purposes that it fulfills: It is currently the medium through which
millions of users around the world communicate and get information of all kinds.
Cell Phones & Computers The 0 most important discoveries of the last 50 years 7
ISTOCKPHOTO/ THINKSTOCK Cellphones, as well as mobile computers, nowadays are a real
tool and its use, conditions our life to a great extent. Think about all the things you can do
with these inventions, just by moving one of your fingers you can access any type of
information, you can communicate with whoever you want, make graphic, auditory or
filmographic records and locate you through the GPS system , Among a huge number of
things