Inventions

Adam Osborne invented and produced the first commercially successful portable personal computer with his company: Osborne Computer Corporation (OCC) in 1980, the fist portable computer (the osborne 1) was about the size of a suitcase and included 64K of memory, a monochrome monitor, a keyboard, and a disk drive.

This was not too expensensive for such a big and famous invention, you could own an osborne 1 for $1795
One year after osborne computer corporation (OCC) had made its first million dollars in computer sales even with the other companies trying to make competition it became one of the most top selling computers and started making 10.000 units per month now!!!  in the second year they made 70 million dollars!!! see more info here