Summary

8 IT Essentials: PC Harware and Software Companion Guide■■■MercuryCadmiumHexavalent chromiumBatteries are used to power laptop computers, digital cameras, camcorders, and remote-controltoys. Batteries can contain some of these toxic materials:■■■■Nickel cadmium (Ni-Cd)Nickel metal hydride (Ni-MH)Lithium ion (Li-ion)Lead (Pb)Many organizations have policies that define disposal methods for the hazardous componentsfound in electronic equipment. These methods typically include programs to reuse,recycle, or exchange.You might need to dispose of computer components because they have become outdated, oryou might need additional functionality. In addition to recycling parts, you can donate themto other people or organizations. Some businesses exchange used computer equipment forpartial payment of new equipment.Describe Situations Requiring Replacement ofComputer ComponentsSituations that require the replacement of computer components include the repair of brokenparts or an upgrade for functionality.After completing this section, you will meet these objectives:■■■■■■■Select a case and power supplySelect a motherboardSelect a CPU and cooling systemSelect RAMSelect adapter cardsSelect storage devices and hard drivesSelect input and output devices