Tuesday, June 30, 2009

Wednesday, June 24, 2009

Tuesday, June 16, 2009

Saturday, June 13, 2009

Tuesday, June 09, 2009

Colossus




The Colossus machines were electronic computing devices used by British codebreakers to read encrypted German messages during World War II. These were the world's first programmable, digital, electronic, computing devices. They used vacuum tubes (thermionic valves) to perform the calculations.

Monday, June 08, 2009

Thursday, June 04, 2009

Tuesday, June 02, 2009