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calculator
calculator was invented by blaise pascal -
steem engine
steem engine was invented by james watt -
Electric bulb
Electric bulb was invented by Thomas Alva Edison -
computer
charles babbage was known as the father of computer -
napier bones
napier bones was invented by john napier -
television
television was invented by john logie baird -
telephone
telephone was invented by alexander graham bell -
telescope
telescope was invented by galileo -
telegraph
telegraph was invented by samuel morse -
camera
camera was invented by sir john f.w.herschel -
automobile
automobile was invented by henry ford -
dynamite
dynamite was invented by alfred nobel -
lightning conductor
lightning conductor was invented by benjamin franklin
