Electronic Data Processing
• Charles Babbage 
– British mathematician
– Difference Engine
– Analytical Engine
• all the functional parts of a modern computer
• store, mill, control, I/O (punched cards), self-sequencing
Electronic Data Processing
• Augusta Ada Byron, Countess of Lovelace
• First Programmer
• Loop
Electronic Data Processing
• George Boole
• binary-valued logic (Boolean algebra)
Electronic Data Processing
• John V Atanasoff
– Atanasoff Berry Computer (ABC) 1939
• Mauchley & Eckert
– ENIAC
– 1946
Electronic Data Processing
• John von Neumann
– Binary
– Stored Program Concept