atomic bombs dropped on Hiroshima and Nagasaki rise in public television broadcasting transistor developed by Bell Labs as the first alternative to the vacuum tube Wiesner with Dr. Y.W. Lee invents auto-correlator, a device used to decrease radar and radio noise Soviets test an atomic bomb North Korea invades South Korea UNIVAC I, the first commercial computer, is delivered to the U.S. Bureau of the Census 1945 1946 1947 1948 1949 1950 1951 ENIAC, the first electronic digital computer is developed radio reaches 85% penetration in the U.S. RCA markets ten-inch-screen television sets for $375, making the first big commercial receiver success Sony of Japan purchases rights to the transistor as Japanese companies begin a transformation of household electronics through product design work on tape recorders and players, dynaural noise suppressors, amplifiers, new speeds, marks the beginning of the high fidelity era in recorded music Polaroid Camera developed Columbia introduces 33-1/3 rpm, long-playing disks Norbert Wiener, Cybernetics National Science Foundation (U.S.) is established