Computers over the last 100 years By JoeCooper Feb 9, 1936 Z1 Computer First freely programmable computer. Feb 9, 1942 ABC Computer Who was first in the computing biz is not always as easy as ABC. Feb 9, 1944 Harvard Mark I Computer The Harvard Mark 1 computer. Feb 9, 1946 ENIAC 1 Computer 20,000 vacuum tubes later... Feb 9, 1948 The Transistor Feb 9, 1948 Manchester Baby Computer & The Williams Tube Baby and the Williams Tube turn on the memories.
