picture of my 1983 vintage TRS-80 Model 100. This 3.1 pound computer was one of the first of what would become known as notebook computers, and proved to be quite popular, selling more than six million units worldwide. Lots of tech-savvy reporters wrote and filed their stories with these units. Quite a few business people did, too. The model you are looking at was "loaded" with 24K (that's kilobytes) of RAM and cost about $1,400. An 8K RAM version sold for $300 less (the unit could accomodate a total of 32K RAM.)