Daily use of the electronic equipment is known as household electronics, and turns on TV, phone, DVD, CD, PC, the laptop etc. This equipment is made around the world. With advance in electronics at continuous speed many flood of electronics of a new version of a product every year and cost existing products reduce by the market continuously, and it is one of the biggest advantage of the industry of household electronics.
Electronic waste - one of the related problems electronic point and many manufacturers plans to deal now with them, vanishes for nothing.
All electronic devices use semiconductors, and without these semiconductors any of the electronic device isn't full. The semiconductor behaves as an insulator in an absolute zero (-273 degrees on Celsius) and can be distinct from the conductor that at this temperature the most remote filled electronic power strip is absolutely filled in the semiconductor, are compared to the conductor in which the group is partially overflowed.
At room temperature the semiconductor show very small electric conductivity much below, than that from the conductor.
Dope in the semiconductor:
The most widespread semiconductors used for electronic devices, are silicon and a germaniye. Though some other conductors, such as iridic фосфид, arsenide of gallium and mercury telluride of cadmium also are used.
The pure semiconductor which is also known as peculiar semiconductor when being varnished with an electronic rich element, for example, arsenic or an electronic imperfect element, for example, pine forest in very small amount, its increases in conductivity and the resulting conductor, is known as the external conductor. My arsenic of a dope (electronic rich) and pine forest (an imperfect electron) in silicon, we receive n-type (negative type) and p-type (positive type) semiconductor devices.
We can create p-n connection, varnishing a various element in various area of the semiconductor, and the device is known as the diode. As we can create p-n-p or n connections - p - n-structures, and the device is known as triodes.
It is the device which we can receive moving pictures and sounds on distance. The whole transfer and systems of the receiver demand the following entrances.
1. The chamber for live images or the managing director of the spot scanner for transfer of films and a sound source.
2. Transmitters to transmit both images and sounds.
3. Systems of the receiver to receive these signals.
4. The device of display which is or CRT, Back design, the LCD monitor or plasma. To show a signal in forms of images and sounds.