Compléter ITS501 -class2 -activity 1Version en ligne Types of Business Common Technology par ghazwa moukaddem 1 laptop financial Windows office emails PCs Apple presentations desktop letters Computers For most companies , the most useful piece of equipment is also the most understood . Desktop computers loaded with and productivity software packages allow workers to write , analyze information , send and receive , and design sales . The computer itself could be a model with a separate monitor and keyboard , or a mobile . There are two main types of computers . Personal computers ( ) operate using Microsoft are the most common , and Macintosh Computers using operating system are popular among creative professionals .