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Data Storage Through the Years - From Cassettes, Floppies, Ramdisks and Hard Drives
Sometime around 1987 or so I was given my first DOS based computer. Up until that time I had been using a TI-99/4A - arguably the best "home computer" at the time. The TI was great--I actually learned to program on it. Unfortunately when I first started, the only way to save anything I had worked on was to send it to a cassette tape. That's right, a cassette tape. It took forever to save anything to cassette, as you might imagine. And you needed a new cassette for every program you wanted to save. It didn't matter though, that was all I knew so I couldn't complain. A while later I invested in a 5.25 inch floppy drive. Now I was really cooking. The floppy drive was fast and it could hold more than one program. It was great. The TI didn't last long enough to take advantage of the greatness of the hard drive, but we did get a glimpse of what they might be like when someone invented a ramdisk for it. The ramdisk was like a hard drive, but everything was saved to memory. It was lightning fast and could store vast amounts of data (of course "vast" is a relative term), but it could only store files temporarily. Once the power went off, your files were gone. By the way, you can create a ramdisk on your computer today if you want some fast, temporary storage space. The next big thing was the during the IBM revolution or the DOS years. When I saw the first flight simulator on a portable PC with a roughly 6" monochrome display, I was hooked. I knew I had to have one. I lucked out when a friend's father decided to give me his Olivetti portable (or like they used to call it - lug-able) computer. It came with a built-in hard drive--my first. It was a whopping 8 megabytes! Since that time, hard drives have advanced a little bit. Today 8 meg wouldn't hold the smallest toolbar software. Today's hard drives are measured in gigabytes or even terabytes (1,000 gigabytes). For someone like me the bigger these things get, the more amazed I am. If airplanes had advanced as much as hard drives since 1990, planes would probably hold a whole city and travel from coast to coast in about a minute and a half. With hard drives storing so much data, and being so inexpensive, most people are adding external drives to their systems. And why not? It beats keeping a truckload of cassette tapes around. Terry Cowell has written about computers since 1984. He contributes regularly to http://www.maxtorharddrives.com
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