1. Jamaal Randle Lesson 4: computer maintenance

2. Objectives • Identify problems that occur if hardware is not properly maintained • Identify routine maintenance that can be performed by users • Identify maintenance that should be performed by experienced professionals

3. Maintenance issues • Sooner or later, you will begin to experience problems with the hard ware. For instance, the performance of a hard disk starts to slow and printer problems may start to occur. The keyboard and the mouse can become sluggish, and the monitor may not work properly

4. Hardware maintenance • You should clean your computer every 3-6 months

5. Keyboard and mouse • Keyboard and mouse: you should check and clean the keyboard periodically. Dirt, dust, hair, and food particles can accumulate, causing the keys to jam or otherwise malfunction.

6. Printer • Turn off printer • Use a cleaner recommended by the manufacturer, or a lint-free cloth, and then moisten it with a 50-50 percent solution of water and vinegar. Wring out all excess moisture and thoroughly clean the outside of the printer, making sure that no fluids gets inside the printer. • Never spray an aerosol directly onto the printer. • It is not necessary, but consider wearing latex gloves to protect your hands from dirt and other debris

7. Computer memory • One way to measure a computers power is by its capacity to remember. RAM is made up of small memory chips that form a memory module. These modules are installed in the RAM slots on the motherboard of your computer

8. Preventive maintenance

9. Cookie • Cookie is a small file that a web site uses to identify a specific computer.

10. Temporary files • Temporary files: various application programs to free memory for other programs.

11. Recycle bin • holds files and folders before their finally deleted.

12. Disk Defragment • occurs when a piece of data is broken up into many pieces.

13. Specialized maintenance Maintenance that should be done by a professional • Replacing the power supply or opening the power supply case • Replacing other electrical • Replacing processor • Replacing or adding a hard disk • Replacing or adding additional RAM

14. Risks of networked computer • Networked computers are usually at risk of being hacked or getting viruses. • People who break into computers are called hackers • People who create computer viruses make them to steal services and information