Please protect our environment(900字)

Pleaseprotectourenvironment(900字)Computersstartedtobecomepopularwithbigcompaniesinthe1960s.ComputerYou’veprobablyknownaboutcomputersyourwholelife.Butcomputershavenotreallybeenaroundforverylong.Computersstartedtobecomepopularwithbigcompaniesinthe1960s.Computersdidn’tbecomewidespreadinhomesandschoolsuntilthe1980s.HOWDOPEOPLEUSECOMPUTERS?Peopleusecomputersinmanyways.Storesusecomputerstokeeptrackofproductsandcheckyououtatthecashregister.Banksusecomputerstosendmoneyallovertheworld.Computershelpteacherskeeptrackoflessonsandgrades.Theyhelpstudentsdoresearchandlearn.Computersletyouhookuptonetworks(manycomputershookedtogether).TheyletyouhookuptoaworldwidenetworkcalledtheInternet.Scientistsusecomputerstosolveresearchproblems.Engineersusecomputerstomakecars,trucks,andairplanes.Architectsusecomputerstodesignhousesandotherbuildings.Thepoliceusecomputerstotrackdowncriminals.Themilitaryusescomputerstomakeandreadcodedmessages.