| A | B |
|---|
| cathoderay tubes | a vacuum tube through which electric currents are forced |
| mechanical television | a tv system that relied on rotating discs to show images |
| electronic television | tv that used cathoderay tubes |
| coaxial cable | consists of pure copper or copper-coated wire surrounded by insulation and aluminum |
| cable television | introduced in 1948 to provide tv reception in rural and mountainous areas in Pennsylvania |
| videotape | made it possible for tv programs to be produced anywhere and improved visual quality on home sets |
| remote control | a wireless ultrasound unit called the Lazy Bones; it was invented in 1957 by Robert Adler |
| fiber optic cable | introduced by Corning in 1970, it consists of long, stretched rods of glass or plastic that allows the digital transmission of information using rapid pulses |
| high definition television | introduced in 1981 by the Japanese National Broadcasting Company this TV system was a major breakthrough in visual quality due to its sharpness and more vivid images |
| v-chip | an electronic chip on a television that gives parents control of what their children watch on TV |
| closed-captioning | a decoder that is embedded into a TV to allow words to run across the bottom of the screen that tells what is being said on the TV |
| digital video recorder | an electronics device or software application that records video in a digital format to a disk drive, USB flash drive, or SD memory card |
| kinescope tube | a tube used to receive television images |
| iconoscope | a television camera tube invented in the 1920s by Zworykin |
| Paul Nipkow | developed a rotating-disc technology to transmit pictures over wire in 1884 called the Nipkow disk |
| Vladimir Zworykin | Russian inventor of the iconoscope (1923) and the kinescope (1929) |
| John Logie Baird | He invented a mechanical television system. |
| Philo T. Farnsworth | He invented the dissector tube and was the first inventor to transmit a television image comprised of 60 horizontal lines. The image transmitted was a dollar sign. |
| Charles Jenkins | This American invented a mechanical television system called radiovision and claimed to have transmitted the earliest moving silhouette images on June 14, 1923 |
| David Sarnoff | As head of RCA, he pushed for the delopment of radio in the 1910s and 1920s, and then television from the 1930s through the 1950s. |
