Electronic Computers
1943-1948

• The first general purpose all-electronic computer, ENIAC (Electronic Numerator, Integrator, Analyzer, and Computer), invention of John W. Mauchly and J. Presper Eckert, was designed in 1943-1946 at the Moore School of Electrical Engineering of the University of Pennsylvania.

• In January 1948 Wallace Eckert of IBM completed SSEC (Selective Sequence Electronic Calculator), a computer with 8 20-digit registers and 150 20-digit words of relay memory, and a program that was partly stored but also controlled by a plugboard. IBM considers it the first computer.