1. 1944 Via minf.vub.ac.be Engineer John von Neumann stands with the Harvard Mark I, an electromechanical computer. 2. 1944 en.wikipedia.org / Via royal.pingdom.com British code breakers used The Colossus to decrypt coded German messages at the end of World War II. 3. 1946 ftp.arl.mil / Via linuxshellaccount.blogspot.co.uk ENIAC, the world’s first general-purpose computer, weighed 27 tons. Among other things, the so-called "Giant Brain" was used for calculations for the development of the hydrogen bomb. 4. 1949 Flickr: nasacommons / Via brainpickings.org Analog Computing Machine, an early version of the modern computer, is located in the then-Engine Research Building at the Lewis Flight Propulsion Laboratory in Cleveland, Ohio, which is now part of NASA. 5. 1951 ftp.arl.mil / Via royal.pingdom.com Harwell's 1951 model called The WITCH was short for Wolverhampton Instrument for Teaching Computing. 6. 1951 Via computerhistory.org Massachusetts Institute of Technology's Whirlwind incorporated 4,500 vacuum tubes, 14,800 diodes, and took up 3,100 square feet of floor space. 7. 1954 columbia.edu / Via royal.pingdom.com IBM's Naval Ordnance Research Calculator could perform 15,000 operations per second, making it the most powerful computer of its time. 8. 1957 retronaut.com / Via buzzfeed.com Norwich City Council’s first computer is delivered to the City Treasurer’s Department. Elliott Brothers was an early UK computer company. 9. 1956 en.wikipedia.org / Via royal.pingdom.com IBM 305 RAMAC. Each of those massive towers is a hard disk drive holding a whopping 5MB of data. 10. 1956 en.wikipedia.org / Via royal.pingdom.com The Bendix G-15 cost around $60,000. 11. 1961 Via piercefuller.com The IBM 7080 12. 1962 en.wikipedia.org / Via royal.pingdom.com BRLESC I had 4096 72-bit words of memory, the equivalent of 36k. 13. 1964 en.wikipedia.org / Via royal.pingdom.com UNIVAC 1108 stored a then scarcely imaginable 1MB of data.