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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.
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Torch (507) - Laser Lamp (50) - Calculator (183) - Radio (233) - Electronic Gift (77) - Flashing Electronic Gift (60) - Promotional Fan (77) - Digital Gift (51) - Calendar (93) - Sound Box (17) - Theftproof Gear (13) -

light
ID: HP-024760
Torch (507)
Laser Pen
ID: HP-023870
Laser Lamp (50)
Radio
ID: HP-024354
Calculator (183)
Radio
ID: HP-024353
Radio (233)
Electroic Photo Frame
ID: HP-024954
Electronic Gift (77)
Necklace
ID: HP-001621
Flashing Electronic Gift (60)
Fans
ID: HP-024848
Promotional Fan (77)
digital photo frame
ID: HP-022359
Digital Gift (51)
calendar
ID: HP-023598
Calendar (93)
Appeal miniature small sound box
ID: HP-021300
Sound Box (17)
Anti lost
ID: HP-001487
Theftproof Gear (13)

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