1900, Karl Rand discovered human blood type, which made blood transfusion possible.
2.aspirin
Aspirin 1897 felix hoffman, a German, synthesized acetylsalicylic acid, which was registered as aspirin two years later and became the most popular drug a century later.
Step 3 look
Watches, one of the inventions with many changes in human history, appeared in 1904.
4. Credit card
In the history of credit card currency from 65438 to 0920, the emergence of credit card is the biggest revolution since the emergence of money. The first credit card was issued in the 1920s, and the commonly used credit cards were issued in 1950.
5. Penicillin
Penicillin 1928: People say that penicillin is the most contributing drug in this century, and its inventor is British bacteriologist alexander fleming.
6. TV set
1923, the soul of television CRT was born. Television technology was widely used in the 1940s, and 1954 ushered in the era of color television. Since the 1960s, almost all countries have established TV stations, and this box has created countless happy times for mankind.
7. Plastic
The invention of plastics is a masterpiece of mankind in the 20th century. Plastic has undoubtedly become an indispensable and important raw material in modern civilized society. At present, plastics have been widely used in aviation, aerospace, communication engineering, computer, military, agriculture, light industry, food industry and other industries.
8. Internet
In the 20th century, one of the great influences of communication technology on human society was the Internet, which was connected by many computers and communication technology.
9. Aircraft
Aircraft 1903 12 17, the first powered aircraft begins to fly. 1933, the world's first regular air route was opened, which greatly expanded the space for human activities.
References:
Baidu Encyclopedia-Invention of the 20th Century