IBM was quick to get its PC to market, in less than two years, in part because Don Eldridge, who was in charge of the project that had designed the 5150, IBM's first successful PC, using mostly off-the-shelf parts, an idea successfully demonstrated with the Altair. In fact, only two parts were of IBM design, the BIOS (Basic Input/Output System) and keyboard decoder. This left many firms attempting to cash in with computers known as "compatibles". How compatible did compatible mean? Well, it created untold grief.
The best-known truly compatible computer came from a Texas company known as Compaq. Besides the fact that it worked, Compaq had one big thing going for them, like an Osborne 01, and the keyboard could be attached over the front of the floppy drives and monitor. This enables it to be hauled around, with the same grace as hauling a sewing machine. This was marketed as a portable PC, and a more accurate term that soon became popular. These and others became known as "luggable" computers.
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