Computer Hardware Tutorials

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4. The numeric keypad. This has two functions. When the Num Lock light is on, this functions as a 10-key calculator. When the Num Lock light is off, this functions as another set of cursor movement keys. Most keyboards carry a variety of additional keys, including Esc (Escape), Print Screen, Scroll Lock, and Pause. The uses of these specialty keys varies from system to system. In most systems: 1. Esc can be used to undo commands or actions and in keyboard combinations. 2. Print Screen can be used to copy the current screen contents to the Clipboard, from which you can then Paste the contents into a document for printing (see the Print Screen entry in "Troubleshooting Common Keyboard Problems" later in this chapter). 3. Scroll Lock changes the action of the directional arrow cursors. Check your user manual to find the details of the specialty keys on your system's keyboard. Using Special Characters and Symbols Many documents include characters that don't appear on the keyboard. These special characters include letters from the Greek alphabet, scientific values, symbols for foreign currency, and copyright and registration symbols. Some applications have shortcuts for entering these special characters; Windows 95 provides its own set of special characters in its Character Map accessory. To use the character map, follow these steps: 1. Check to see what font you are using in the document to which you want to add the characters. 2. Click the Windows 95 Start button and choose Programs, Accessories, Character Map. 3. In the Character Map application font list, select the name of the font you're using in your document. 4. Find the character(s) you want to insert in the program document and double-click them. This enters the characters in the Characters to Copy box. You can select several characters for insertion in your document--all at the same time! The characters that you double-click are shown in the Characters to Copy box. 5. When you have the characters you want to use, click the Copy button. 6. Return to the program that you want to use these in and click the mouse where you want to insert them.