Please help me find a list of key radio and television equipment manufacturers

Thomas Edison (1847-1931) was a famous American inventor. He worked almost ten hours a day for decades, and read 3 to 5 hours in the study at night. So, on the day of Edison's 79th birthday, he proudly said to people, I am already 135 years old.

He lived to be 84 years old and made as many as 1,100 inventions during his lifetime, the greatest of which was the invention of the phonograph and the automatic telegraph, experimenting with and improving the incandescent lamp and **. Edison began to study electric lighting in his early 20s, and for more than 10 years, he successively chose bamboo cotton, graphite, tantalum ......and so on thousands of different substances as filament materials for testing, often through the sky, once he and his assistants worked for 5 days and nights. In 1879 Edison used carbon filament as an incandescent filament and lit it for 40 hours.

Because the surface of the carbon filament is porous, brittle, and the strength is very low. It was soon replaced by tungsten wire.

In 1883, Edison discovered the phenomenon of thermal electron emission, also known as the "Edison effect", that is, some electrons or ions near the metal surface get enough kinetic energy for their irregular movement due to high temperature, overcome the constraints of the surface, and escape from the metal. The Edison effect is essential for the operation of any vacuum tube, and the cathode, which is the emitting surface, is often coated with a layer of alkaline earth metal oxide to facilitate the emission of electrons, and heated with an electric current to maintain high temperatures.

In 1900, Edison invented the iron-nickel battery, which is an alkaline battery with an electromotive force of about 1 3 1 4 volts, which has a long life but is not very efficient. Edison made many inventions in his life, but when others asked Edison about the reason for his success, he said: Some people think that I have some genius, which is not true, "genius" is one percent inspiration, ninety percent of inspiration.

To get from Nanning to Anji, you need to take a bus to Hangzhou or Huzhou, and then transfer to a bus or citybus to Anji.

If you don't know anything, just go straight to the city center, the bus has a clear explanation and ask others, Nanning people are hospitable.

Mom's expectations for you are too high, and I hope that Jackie Chan can understand it, communicate with him more, communicate and reason. After all, there are very few people who can go to Tsinghua University and Peking University, as long as you work hard.

Try to be yourself.

Your mom wants you to fulfill their unfulfilled wishes.

As long as you do your best.

She won't blame you.

Rather than being pressured.

It's better to turn it into motivation.

I believe you can do it.

Maybe that miracle is you.

There is an information desk outside the station, so just ask for it.

One of the sockets on the router is loose.

The plug is loose, or there is a problem with the IP, or it is attacked by ARP, you don't see if the packet is lost!

The memory and graphics card need to add some other improvisations, and it's okay.

Swap out the CPU to P4

The memory was sold for 256 and replaced it with 2 512.

The graphics card was replaced with a 6600 or 1600 or high-frequency 9550 hard drive, and the hard disk was sold for an 80g one.

However, it is not recommended to upgrade. Because it's all changed. It's better to buy a new one.