Who invented the phone? Who invented the pen

The front one is too long, and it was invented by Belle.

Martin Cooper, the inventor of the mobile phone.

This is the crystallization of the wisdom of the ancients

There are brushes, ballpoint pens, fountain pens, quill pens, etc., which are you talking about?

This question is a bit esoteric, I think the ancients wanted to express their feelings very much, and they had to find something to paint.

It is recognized worldwide that photography was invented by L. Daguerre of France. On August 19, 1839, France announced to the world. L. Daguerre's full name was Louis-Jacques Munday Daguerre.

He was born in 1787 and died in 1851. He was a landscape painter who specialized in painting stage backgrounds, and at that time a popular tool for landscape painting and painting was the camera obscura. The role of the camera obscura:

The landscape enters the camera obscura, and the 45o mirror is reflected on the frosted glass above the camera obscura, and the canvas is spread on the frosted glass to paint. By chance, he found that the canvas left on the camera obsccura yesterday had faintly left the shadow of a tree on the canvas, so he asked how to leave the image on the camera obsche on the canvas, and Daguerre learned that J. N. Nieps was also doing this kind of troublesome wheel experiment, and at this time J. N. Nieps was over 60 years old, and he felt that the financial, energetic, and material resources were not enough, so he agreed to cooperate with L. Daguerre. On December 4, 1829, a ten-year cooperation agreement was signed, under which the two sides published their respective research results in order to help each other and learn from each other's strengths.

J. N. Nipues's residence, Chayon (Chayon), signed an agreement with L. Daguerre, and immediately showed his detailed production method and made a demonstration, but L. Daguerre did not come up with anything, so some people suspect that L. Daguerre had not yet experimented with results. After the agreement was signed, the two sides conducted their own experiments and never met again. In 1833 J. N. Nipues died, and his son I. Nipues inherited the partnership of the agreement, but unfortunately I Nipues did not want to do any experiments, so L. Daguerre was left alone to explore.

In 1837, after eight years of exploration, L. Daguerre finally succeeded in shooting a still life in natural light. On August 19, 1839, the first page of the history of world photography was unveiled when a grand meeting of the French Academy of Sciences and the Society of Fine Arts was held, at which this major invention was announced. Therefore, the world's first camera and the method of sensing, developing, and fixing images were invented by L. Daguerre.

The original meaning of computer was "calculator", that is, humans invented computers to help with complex number crunching. The concept of this artificial calculator can be traced back to the great French thinker Pascal in the seventeenth century. Pascal's father was the tax collector, and the currency system at that time was not a decimal system, which was very cumbersome to calculate.

In order to assist his father, Pascal invented the first calculator that could perform addition and subtraction operations using the principle of gears. Later, the German mathematician Leibniz improved it and invented a calculator that could do multiplication and division. Although the functions of the calculator were improved and refined in the future, the real electric calculator had to wait until 1944 AD to be manufactured.

The first machine that can really be called a computer was born in the United States in 1946, invented by Mao Qili and Eckert, and the name is ENIAC. The computer uses vacuum tubes to process signals, so it's bulky (it takes up a room) and consumes a lot of power (the whole town knows about it, because the lights in every house are dim!). And the memory capacity is very low (only more than 100 words), but it is already a major advance in human technology.

And we usually call this kind of computer that uses a vacuum tube the first generation of computers. The first generation of computers was the size of two classrooms, which was much different from the size of the personal computers we use today. At that time, the computer parts were vacuum tubes (which can no longer be found) and the archive thing is a punch card, if there is no design concept of predecessors, there is no invention of the computer, so it is a bit difficult to define who invented the computer.

True love is not necessarily a perfect match in the eyes of others, but a mutual fit in the hearts of people who love each other, tolerate each other, and care for each other. True love is the blending of heart and heart, the combination of soul and soul, it is a mixture of sweet and sour, but it makes you happy. True love is to make each other's life better and silently dedicated, regardless of how much or little each other pays, do not ask for anything in return, and only ask the other party to live better than themselves.

This love warms not only themselves, but also the worldly hearts. True love is to know how to cherish when you can love; True love is knowing how to let go when you can't love! Because, letting go is the ...... having everythingLove is a natural fate, not a stalker.

When you cherish it, please love it well. Feel it with your heart. When you reap true love, you also reap your own happiness.

Because human beings are advanced animals, the difference between them and other living beings is that --- human beings have love, spiritual love, and human beings are a kind of living spirit!

Mankind. Happiness and Pain were invented ... Love.

feelings, can't make sense; Maybe everyone is an inventor, but there is no such thing as good or bad inventions

Remember.