In mid-1958, X was a newly employed engineer at Y who did not yet have the right to a summer vacation. He spent the summer working on the problem in _____ design that was commonly called the "tyranny of numbers" and finally came to the conclusion that manufacturing the circuit components en masse in a single piece of ____________ material could provide a solution. On September 12 he presented his findings to the management and proved that his invention Z worked and thus that he solved the problem. Identify X, Y and Z.