Working prototype company sound dollar thousand pipe

Working prototype company sound dollar thousand pipe 😮 first call, first call

Before the mobile phones we are familiar with, their prototypes already existed. However, electronic phones have not become the pinnacle of achievement; they have been replaced by the widely used mobile (portable) phones.
The ancient prototype of the telephone was owned by the Persian king in the sixth century BC. This service consists of approximately 30,000 people. They were summoned and located in the earplugs on the watchtower and the top of the mountain, relaying information to the king, and giving orders to the king from a distance. The distance that messages can be transmitted in a day is approximately equal to the transition time of thirty days. People also know the prototype of this phone, which was made in China in 969 by an inventor named Kung Fu Rong. He piped the sound. The telephone has been around for centuries. The disadvantage of transmitting sound in this way is the attenuation of sound vibrations at long distances. In order to use these non-electric phones over long distances, the middle point is essential.

He proposed a telephone concept based on the nature of electricity, and he has been engaged in this work since 1850. He outlined the working principle in a paper in 1855, but mechanical engineers never really applied his ideas.
The United States has conducted research and invented a device that can transmit sound through wires. Call it a telephone call. Western Union soon learned about the development of a little-known elderly inventor. Taking advantage of the sad financial situation of the Italian researchers, the company purchased all the drawings from him and promised to help with patent registration. However, the second promise was never fulfilled. I submitted my own application and tried to apply for a patent for the phone, but I was not satisfied. First applied for a patent, claiming to be the inventor of the telephone. He was sued for a long time, until 1888, the US court still recognized his primacy in this invention. Nevertheless, the Italian inventor's patent period had expired by then, which gave the right to continue producing mobile phones. Therefore, Meitch had nothing and died of poverty. Bell's phone did not ring, but the call was made through the receiver via a whistle. As we all know, he is a religious figure, and he believes that he can communicate with the souls of his deceased relatives over the phone.

The prototype of the first mobile phone was a far cry from the small and lightweight devices we are used to today. The phone was first introduced in 1974. It is bulky, heavy and can only work with one battery, which means that the working time is not very short. Facts have proved that the price of the first mobile phone is unacceptable to ordinary citizens. It should be pointed out that by that time, several leading technology companies were already developing mobile phones in parallel, and despite this, they had completed this work earlier than other companies. From the outside, the first mobile phone looks more like a public phone: a tube is connected to the power supply through a long wire. The instrument is in a large shoulder bag.
About twelve different models of Cooper's telephone were invented. The mobile phone is in the usual form, invented by a world-renowned company. The first prototype can work in standby mode for about eight hours and weighs about one kilogram.

The first commercial mobile phone was named by the 8011 company. He can remember thirty numbers, weigh up to 800 grams, and cost nearly four thousand dollars. The company spent at least $100 million on development, and this work took about ten years. Its battery lasted only one hour of talking, while charging lasted for a full ten hours. In the third year of the same year, the company introduced a new model-Motorola. It is worth three thousand dollars. At the time, the device was considered the smallest mobile phone. This year, we launched a miniature phone model that can be easily fitted into the palm of a person. Soon, consumers saw the 1012 model produced by the famous Finnish company Nokia-it is a large mobile phone. Now, they not only produce high-tech products, but also expensive gadgets. For example, 4 costs more than US$8.01 million, but some phones are even more expensive. There is an interesting article on the site. Host Almost Destroys Contestant's Prototype | Backyard Inventors | Spark