The Compaq Portable was the first 100% compatible IBM computer clone. Why make an IBM clone? Because the IBM PC was extremely popular, and taken very seriously by businesses looking for a computer system.
, Osborne 1
The Osborne 1 is considered to be the first true portable, full-featured computer. It includes all the components required to be a completely useful and operational computer system
, Apple II
The Apple II, or Apple ][, became one of the most popular computers ever. Although it is a vast improvement over the Apple I, it contains the same processor and runs at the same speed.