The Laptop Know-how (CT) program has been developed to provide training in the ideas underlying the design of recent computer systems. An inspiring summer faculty on computing at the College of Pennsylvania´s Moore Faculty of Electrical Engineering stimulates construction of stored-program computers at universities and research establishments in the US, France, the UK, and Germany. Among the many lecturers were early pc designers like John von Neumann, Howard Aiken, J. Presper Eckert and John Mauchly, in addition to mathematicians together with Derrick Lehmer, George Stibitz, and Douglas Hartree. Students included future computing pioneers resembling Maurice Wilkes, Claude Shannon, David Rees, and Jay Forrester. This free, public set of lectures impressed the EDSAC, BINAC, and, later, IAS machine clones just like the AVIDAC.