Camera 

This was a device developed to capture photographs, the first camera was designed by Johann Zahn in the year 1685 in Germany with a value of $ 500 dollars, Johann created it because he thought that he had to capture his moments between several images capturing beautiful memories or experiences

Telephone      1857 

Around the year 1857 Antonio Meucci built a telephone to connect his office and the room to be able to speak with his wife and the telephone was created in Havana, Cuba when it was launched on the market, its price was $ 24 dollars

Thomas Edison, created the phonograph, , the first device capable recording and reproducing sound . In 1977 in the United Kingdom it was created under the same concepts as the phonoautograph with the difference that the latter only recorded the sound in a visible medium but did not reproduce it. This device was used in acoustics laboratories to study sounds speech and frequencies in musical tones. the price was $120 dollars

TV 1926

It was created by John Logie Baird in England 1926 He had previously tried to copy the electromagnetic wave system of radio, but investors did not support it . Although it cost him more than he expected, he managed to revolutionize the world of telecommunications thanks to Tv and its cost was $250 dollars

 Microwave oven

Percy Spencer, an engineer at the Raytheon Corporation in Massachusetts United States 1947 had invented what was going to revolutionize the way of cooking and laid the foundations of a multimillion dollar industry, the cost was $ 238 dollars