Bill Gates at Microsoft some Macintosh prototypes to use to develop software, and in 1985 Microsoft subsequently came out with the Windows operating system, an version of GUI for use on IBM PCs.
Steve Jobs’s famous volatility let o his resignation from Apple in 1985. Jobs them founded NeXT computer, the NeXT Cube computer proved too costly for the business to become commercially profitable, bit its technological contributions could not be ignored, In 1977, then –Apple CEO Gilbert Amelio bought out NeXT hoping to use its Rhapsody, a version of the NeXT step operating system, to jump-start the Mac OS development, and Jobs brought back as a part-time adviser.