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William Oughtred leiutas arvutuslükati http://en.wikipedia.org/wiki/Slide_rule http://en.wikipedia.org/wiki/Calculator#The_17th_century
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1642 Blaise Pascal ehitas arvutusmasina http://en.wikipedia.org/wiki/Calculator#The_17th_century http://en.wikipedia.org/wiki/Pascaline
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1820 Thomas de Colmar ehitas aritmomeetri http://en.wikipedia.org/wiki/Arithmometer http://en.wikipedia.org/wiki/Calculator#The_17th_century
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1886 Dorr Eugene Felt ehitas kalkulaatori http://en.wikipedia.org/wiki/Comptometer http://en.wikipedia.org/wiki/Calculator#The_17th_century
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1961 maailma esimene täis-elektrooniline kalkulaator British Bell Punch/Sumlock kalkulaator ANITA (A New Inspiration To Arithmetic/Accounting) http://en.wikipedia.org/wiki/Sumlock_ANITA_calculator http://en.wikipedia.org/wiki/Calculator#The_17th_century
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1974 esimene programmeeritav taskukalkulaator HP-65 http://en.wikipedia.org/wiki/HP-65 http://en.wikipedia.org/wiki/Calculator#The_17th_century
