Summary

30 IT Essentials: PC Harware and Software Companion GuideTable 6-7Internet StandardsInternet StandardShort Message Service (SMS)Multimedia Message ServicePacket switchingPurposeUsed for text messagingUsed for sending and receiving photos and videosUsed for accessing the InternetIdentify Common Preventive MaintenanceTechniques for Laptops and Portable DevicesBecause laptops are mobile, they are used in different types of environments. Some environmentscan be hazardous to a laptop. Even eating or drinking around a laptop creates apotentially hazardous condition.Consider what would happen if a drink were spilled onto the keyboard of a laptop. Manycomponents are placed in a very small area directly beneath the keyboard. Spilling liquid ordropping debris onto the keyboard can result in severe internal damage.It is important to keep a laptop clean and to ensure that it is being used in the most optimalenvironment. The following sections cover preventive maintenance techniques for the laptop.After completing these sections, you will meet these objectives:■■Identify appropriate cleaning proceduresIdentify optimal operating environmentsHow ToIdentify Appropriate Cleaning ProceduresProper routine cleaning is the easiest, least expensive way to protect and to extend the lifeof a laptop. It is very important to use the right products and procedures when cleaning alaptop. Always read all warning labels on the cleaning products. The components are verysensitive and should be handled with care. Consult the laptop manual for additional informationand cleaning suggestions. This section provides basic steps for cleaning the laptopkeyboard, ventilation area, screen, touchpad, disk drives, and discs.To clean a laptop keyboard, perform the following procedures:Step 1.Step 2.Step 3.Step 4.Turn off the laptop.Disconnect all attached devices.Disconnect laptop from the electrical outlet.Remove all installed batteries.