1.ABACUS – B.C. 2600 Chinese people had invent a instrument for calculate that we call Abacus. Abacus is the first Analog computer in the world.
2.Mathematician: Mr. William Oughtred, English people, had invent a instrument for calculate the ratio, of the distance in B.E. 2172 and would show numeral that we called Slide Rule. It was model of Analog Computer.
3.J. Presper Eckert Jr. and John W. Mauchly had invent a electric Computer in B.E. 2489 that call ENIAC (Electronics Numerical Integrator And Calculator) It is the first digital computer in the world.
4.The first generation of train has been bought Rama V that was the steam. The steam train didn’t use fuel.
5.CAR: Car began to use in Thailand since Rama V. At that time, road wasn’t strong enough. Then it was improved to be better.
6.Telephone : The first telephone of Thailand began to use since B.E. 2424. In this present, it is the most necessary for life.
7.Telegram: We found telegram in Rama IV, B.E. 2404. Embassy came to get the relationship and had taken a telegram. Rama V though that the communication was very important. He set up a postoffice to sent telegram.
8.A ricemill was the first agriculture technology by American People in Rama V.
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