Electronic gift, China Electronic gift, Electronic gift Manufacturers, China Electronic gift Suppliers--yiwugift.com

Your position: Yiwugift > Electronic Gift
Electronic Gift

The history of electronics is a story of the twentieth century and three key components—the vacuum tube, the transistor, and the integrated circuit. In 1883, Thomas Alva Edison discovered that electrons will flow from one metal conductor to another through a vacuum. This discovery of conduction became known as the Edison effect. In 1904, John Fleming applied the Edison effect in inventing a two-element electron tube called a diode, and Lee De Forest followed in 1906 with the three-element tube, the triode. These vacuum tubes were the devices that made manipulation of electrical energy possible so it could be amplified and transmitted.The first applications of electron tubes were in radio communications. Guglielmo Marconi pioneered the development of the wireless telegraph in 1896 and long-distance radio communication in 1901.
more

Torch (534) Laser Lamp (50) Calculator (189) Radio (234) Electronic Gift (99) Flashing Electronic Gift (63) Promotional Fan (78) Digital Gift (57) Calendar (90) Sound Box (18) Theftproof Gear (13)

About Yiwu City | Order process | Ordinary problem | Payment | Delivery method | Opinion complaint | Website declare | Friendly link | Website map

TEL:0086-579-85389003 FAX:0579-85389003 Mobile phone:0086-15158993315 Mr. Luo E-MAIL:173538645@qq.com
- PS:Overall photos and logos are patent and commodities are authorized to produce.
  Copyright ©2004-2016 Yiwu Hua Pin Trade Co.,Ltd (www.yiwugift.com ) ICP:浙ICP备08014358号-26 51La