Wesley Allison Clark (April 10, 1927 – February 22, 2016) was an American physicist who is credited for designing the first modern personal computer.

His sessions with the MTC, "lasting hours rather than minutes"[4] helped form his views that computers were to be used as tools on demand for those who needed them.

He expresses this view clearly here: ...both of the Cambridge machines, Whirlwind and MTC, had been completely committed to the air defense effort and were no longer available for general use.

He practiced what he preached, even though it often meant bucking current "wisdom" and authority (in a 1981 lecture, he mentioned that he had the distinction of being, "the only person to have been fired three times from MIT for insubordination".

)[5]Clark's design for the TX-2 "integrated a number of man-machine interfaces that were just waiting for the right person to show up to use them in order to make a computer that was 'on-line'.

When selecting a PhD thesis topic, an MIT student named Ivan Sutherland looked at the simple cathode ray tube and light pen on the TX-2's console and thought one should be able to draw on the computer.

"[6] In 1964, Clark moved to Washington University in St. Louis where he and Charles Molnar worked on macromodules, which were the fundamental building blocks in the world of asynchronous computing.

physicist Wesley A. Clark, in May 1961, and the machine was used for the first time at the National Institute of Mental Health in Bethesda, MD, the next year to analyze a cat's neural responses.