The Z4 was the first commercial computer developed by Konrad Zuse in 1942. On 12 July 1950, it was sold to a mathematician of the Swiss Federal Institute of Technology Zurich (Eduard Stiefel).
The first computer company
In 1949, the first computer company was founded by John Mauchly and J. Presper Eckert, which was the Electronic Controls Company. Later, the company name was changed from Electronic Controls to Eckert-Mauchly Computer Corporation (EMCC). Also, under the UNIVAC name, it released a sequence of mainframe computers.
Later in 1950, the ERA 1101 or UNIVAC 1101 was the first computer to store and execute a program from memory and delivered to the United States government for the first time. Furthermore, the first commercial scientific computer 701 was introduced by IBM to publicly on 7 April 1953.