hemechanicalcaluclatorswastheintroducti
2rightanglesand,whenhisfatherfoundouthe
relentedandallowedPascalacopyofEuclid.A
Gassendi,andothers.Attheageof19Pascalin
ventedthefirstdigitalcalculator(1642)to
heel(aviewingwindowinanactualmachine).F
andsubtraction,thetoothedcountingwheeli
sstillusedinaddingmachinesanditmaybeofi
tingprinciple.Severalwheelswithteethnum
epositionofthetoothedwheels.Ifyouwanted
kongeometryhimselfattheageof12.Hediscov
on,in1642,ofthe'toothedwheels'(gears)by
r,ÉtiennePascal,hadunorthodoxeducationa
lviewsanddecidedtoteachhissonhimself.He
r,hiscuriosityraisedbythis,startedtowor
ousorderoftheMinims,andhiscellinPariswa
beredfrom0to9arearrangedinarowrepresent
edbythetooththatfacestheindexaboveeachw
of456and111appearsattheviewingwindow.On
orviewingwindows.Theresultoftheaddition
eofPascalsearlydeskcalculatorsusingthet
csbeforetheageof15andallmathematicstext
helphisfather.Althoughlimitedtoaddition
philopherandmathematician.Pascal'sfathe
e'smeetings.Mersennebelongedtothereligi
decidedthatPascalwasnottostudymathemati
ingonce,tens,hundreds,thousends,etc.The
safrequentmeetingplaceforFermat,Pascal,
orexample,thenumber456isrepresentedbyth
swereremovedfromtheirhouse.Pascalhoweve
eredthatthesumoftheanglesofatriangleare
Perhapsmostsegnificantintheevolutionoft
BlaisePascal(1623-1662),thefamousFrench
ttheageof14PascalstartedtoattendMersenn
nteresttolookforamomentatitssimpleopera
eachwheelbyonetooth(ornoth),sothattheth
Numberthatistobeoperateduponisrepresent
eethindicating5,6,and7wouldfacetheindex
toadd111tothisnumber,youwouldsimplyturn
oothhedwheelprinciple,likethis,     PbN