led immediately mechanical automata beginning th century finally computational machines difference engine analytical engines charles babbage countess ada lovelace mid th century lovelace credited first creation algorithm intended processing computer babbage 's analytical engine first device considered real turing complete computer instead calculator sometimes called history 's first programmer result though full implementation babbage 's second device would realized decades lifetime ''logical machines stanley jevons' logical abacus logical machine '' technical problem
Formal science Computer science Algorithms