The explosion of streaming devices and services like Netflix turned a novelty idea into an entertainment steamroller. HD is a resolution standard (group of resolutions) that stem from HDTV (High definition TV). The base resolution of HDTV is 1280Ã—720, which has a 16:9 widescreen aspect ratio. When talking about displays especially outside of the TV industry this resolution is referred to as HD or 720p in order to make a clear differentiation from the increased resolution of Full HD or 1080p which has a resolution of 1920Ã—1080. All of the resolutions in this group are quite popular not only in TVs, but also in mobile devices like smartphones and tablets and of course, some computer displays. An electrical engineering degree is not commonly used as a direct path into the electrical trade. Electrical engineering students are eligible to count their school time toward practical experience requirements in many cases, but it would be more common for them to either sit for the state’s engineering license exam, or progress directly to the level of master electrician in those state’s that allow it. We acknowledge your right to access and control your personal data in accordance with applicable Data Protection Laws. Your participation in the Subscription Program will commence on the day of your successful registration. If you register pursuant to one of our free trial offers (each such offer, part of the Service), you may cancel at any time without charge during the free trial period described in such offer (Free Trial Periodâ€) by following the instructions applicable to the Subscription Program displayed via the Service. If you have not submitted a valid cancellation during such Free Trial Period, we will begin to charge your credit card or alternate payment method accepted by us (Your Payment Methodâ€) the subscription rate described in the Service upon expiration of the Free Trial Period. If you do not register pursuant to one of our free trial offers, we will begin to charge Your Payment Method the subscription rate described in the Service upon your successful registration. The Initial Termâ€ is the initial term applicable to your subscription described in the Service, following expiration of any Free Trial Period, if any. You may not participate in more than one (1) Free Trial Period. The history of electronics is a story of the twentieth century and three key componentsâ€”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.