Asweallknow,thecomputerisamarvelousmachine.Ithasallkindsoftypes.Nowadaysmostcomputershaveamemoryprocessorinwhichinformationcanbestoredandbetakenoutatanytime.

　　Theoldestkindofcomputeristheabacus.ItwasusedinChinalongagoiThefirstmoderncomputerwasverylargeandexpensive,butnowscientistsalreadyhavebeenmakingcomputerssmallerandcheaper,atthesametimeeasiertouseandworkfasterandfasternow.

　　Computerscanbeusedagreatdealinmanyways.Itcandomanykindsofwork.Theycanbeusedindoingbusinessandscienceresearchwork,insomelargefactories,andourdailylife.Weevenuseittoplaycomputergamesathome.Todayalotofpeoplebuycomputers.Computersisbecomingmoreandmorepopularindeed.