Computers. In 1939, Bell Telephone Laboratories completes this calculator, designed by scientist George Stibitz. In 1940, Stibitz demonstrated the CNC at an American Mathematical Society conference held at Dartmouth College. read more
If all other technology remains the same and the silicon chip would not have been invented until 1961, the PC that would have been built in 1928 would likely to have been with a huge tower casing with monochrome monitor, keyboard and mouse. read more