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You actually had to pick up the phone when it rang. A microprocessor controlled everything so that you could listen to your messages, skip from one to the next and erase them. The two-cassette model then got simplified to a single cassette, and eventually the whole thing was simplified even more by using computer memory. The basic machine had two cassette tape decks — one for the outgoing message and one to record all the incoming calls. The answering machine changed all that, and it really was a miracle. Being able to manufacture and control the cassette decks cheaply was a big part of the answering machine boom. But the other part was the breakup of AT&T.
Where there had only been three TV channels before, now there were dozens. Atari released the Atari 2600 in 1977, but sales were slow. New channels popped up all the time, AND you could record all your shows on your VCR and watch them later. Video games were in arcades (and running on computers like the Apple II) in the late 1970s, and even simple video game consoles with games like “Pong” were available. There were video game consoles prior to the 1980s, but they weren’t that popular. It made you feel like George Jetson. For more information on the technology of cable TV, see How Cable TV Works.
The system had huge capacity compared to the radio telephone system. Instead of one tower with four channels serving a 40-mile radius, you could have dozens of cells in a city with 50 callers in each cell. This meant the phone could be small and the battery life would be reasonable. Because the towers were always just a mile or two away, the phone could get by with a one-watt transmitter. The cell phone system for a city was going to be expensive, because companies had to build all those towers in each city.
To learn more about cassette tapes and cassette players, see How Tape Recorders Work. We’ll look at some television-related technology next: VCRs, camcorders, cable TV and video game consoles. It really is hard to believe that there was a time when you couldn’t “rent a movie” on a Friday night. While you are trying to imagine a time when you didn’t have a personal computer or a portable music player, try to imagine this: There once was a time when there were only three TV stations, and there was no way to watch a movie at home unless one of those three stations broadcast it (full of commercials, of course).
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