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How have computers started off?
used for mathematics

what's inside the box?
math

Boolean logic
 implemented by switches
 representation of calculations by binary logic operations
 Boole 1847

Charles Babbage
 mechanical computerĀ
 never finished

ada lovelace
wrote the first ever computer program for charles babbage computer


turingchurch thesis
any compatible function that one computer can do, any other computer can do it too

digital
 discrete number of possibilities
 general purpose
 much cheaperĀ
 high precision

analog
 continuous variables
 no registers


