Answer
McDonnell Douglas, an aerospace manufacturing corporation, acquired Tymshare, a pioneer in time-sharing systems. Tymshare had previously acquired the Augmentation Research Center (ARC), led by renowned computer scientist Douglas Engelbart. Engelbart's lab made significant contributions to computing, including the development of the mouse, graphical user interface (GUI), word processing, and hypertext systems, shaping the course of modern computing interfaces and technologies.