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With some programs, a button appears on the taskbar for each document or window you open. You can use these buttons to quickly switch between the programs or windows. To make a program or window the currently active one, click the associated taskbar button. DEFINITION: URL stands for Uniform Resource Locator, which is the address that defines the route to a file on the Web or any other Internet facility. Generically, it is known as the Web site address. System tray The System tray displays icons of tasks or programs that run continuously in the background. To learn more about each task, position the cursor over the icon for a few moments and a short description of the task appears. Typical tasks in the System tray are Current time, Power usage mode, Mouse properties, and speaker volume. To activate a specific task, double-click the appropriate System tray icon. You may also right-click the icon to see other options. Exploring Your Computer’s Features Exploring Your Computer’s Features Exploring audio features Exploring audio features You can play .wav sound files or audio CDs using the built-in speakers, headphones, or external speakers. You can use your computer to record sounds using the built-in microphone or an external microphone. Using external speakers or headphones Your computer is equipped with a full stereo sound system with internal speakers. Instead of using the internal speakers, you can connect headphones or a pair of external stereo speakers. Before putting on headphones to listen to an audio CD, turn the volume dial down, and do not set the volume too high when using the headphones. Continuous exposure to loud sound can harm your hearing. TECHNICAL NOTE: Use amplified speakers that require an external power source. Other types of speakers will be inadequate to produce sound from the computer. To play back sound files through headphones or external speakers: 1 Locate the headphone jack on the computer. 2 Using any necessary adapters, plug the cable from the headphones or external speakers into the headphone jack. The headphone jack requires a 16-ohm stereo mini jack. Exploring Your Computer’s Features Exploring Your Computer’s Features Exploring audio features To adjust the volume: . For external speakers, use the volume controls located on the speaker(s). . For headphones, use the computer’s volume control dial located on the front of the computer. Recording sounds You may record sounds and save them as .wav files using the built-in microphone or an external microphone. The easiest way to record is through the computer’s built-in microphone. DEFINITION: A .wav (pronounced “wave”) file is the format for storing sound in files in Windows. TECHNICAL NOTE: If you record MP3 files, you can only play them on a device capable of playing MP3 files. Using a microphone To record sounds using the microphone: 1 If you want to use an external microphone, connect it to the external microphone jack located on the righ...

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