Apple II

After a few somewhat esoteric systems (such as the Apple I, which lacked a keyboard, monitor, or case), Apple really hit its stride with the Apple IIe. The "e" stood for enhanced, as this was an improved version of the original Apple II, adding such useful features as the capability to display lower-case letters.

Anyone going through grade school in the United States in the early 1980s likely had a room full of Apple IIe computers tucked away somewhere in the school building, and for an entire generation of tech fans, it was their first introduction to a computer.