Compaq Portable
This computer, about the size of a suitcase, will be the progenitor of modern portable computers, an honor shared with the Osborne 1 (which used CP/M) and the Hyperion (although it used MS-DOS as its operating system, it was not fully compatible).
Technical specifications of computer Compaq Portable
Manufactured by: Compaq
Launched: 1983
Price: 3590 USD
Manufactured in 
USA
CPU: Intel 8086
Memory: None
Hard drive:
Operating system: MS-DOS
Innovations: It was the first computer that was 100% compatible with the IBM PC and was not manufactured by IBM, and it was also the first portable PC considered an economic success.
Thanks to Microsoft's right to license MS-DOS to other manufacturers and the use of third-party parts that IBM used for the PC, Compaq was able to create this computer. However, the most difficult part was copying the BIOS, for which Compaq resorted to reverse engineering, investing over $1 million.
Although many companies launched into the production of compatible computers, none reached the level of compatibility with the IBM PC that Compaq achieved (95%) until other companies such as Phoenix Technologies began selling compatible BIOSes (also developed through reverse engineering).
