Dawn of Electronic Computing
Bletchley Park
BOMBE Mechanical Comuter------a group effort with Turing providing the theory, Harold 'Doc' Keen providing the mechanical designs, and Gordon Welchman providing the critical Diagonal Board Optimization and many other creative people.
Colossus Electrical Computer ------ made by pieces widely used in telephone and radio equipment.
Post-war 1940s
Alumni of the US and UK codebreaking efforts and other started building general purpose computers: Manchester Baby,Ferranti Mark 1,Harvard Mark 1,US Army ENIAC
Post-War 1950s
Science "Won the war"
"A Beautiful Mind",Broad-based investment in science and math.
John Forbes Nash
big person in economic area.
Phone Line Networking
One computer and lots of terminal
If you want to connect to a computer, you need to call it.
Long distance = expensive
Dial-Up Access
Common in 1970s
Quiz
Lorenz Machine for long, detailed and more strategic messages. Enigma for short tactical messages. And they are all belong to German.
John Forbes Nash was a brilliant mathematician who is best known for his work on non-cooperative equilibria in game theory.
Polish Cipher Bureau gave the British the knowledge that the Enigma could be broken.
WW2 was widely distributed and could not depend on wired telephone and telegraph for communications, and they had to depend on wireless technology, so the message must to be encrypted and Enigma play a important role in it.
Modem stands for "Modulator - Demodulator" - Modulation is the act of converting data into sound and demodulation is the act of converting sound into data.
Leased lines were expensive and the cost was closely related to the distance of the leased line