1. C OMPUTER M AINTENANCE Jessica  Lesson 4

2. O BJECTIVES FOR THIS C HAPTER Identify problems that can occur if hardware is not properly maintain. Identify routine maintenance that can be performed by users. Identify maintenance that should be performed by experienced professionals.

3. M AINTANCE ISSUE The computer requires regular maintenance. Managing computer cables is an overlooked problem when maintaining computer system. Damaged and poorly maintained cables can prevent peripheral devices from communicating with the computer. Unorganized and unprotected cables can also create safety hazards.

4. H ARDWARE M AINTENANCE … A. Keyboard & mouse : Clean them often

5. H ARDWARE M AINTENANCE … B. Printers : Should be cleaned when print quality deteriorates or when you change the toner cartridge

6. C OMPUTER M EMORY … The hard drive can be compared to long-term memory and random access memory to short- term memory. Data stored in RAM is temporary. When the computer is processing data, it reads and writes to RAM.

7. P REVENTATIVE M AINTENANCE A. Disk Defragmentation : Occurs when a piece of newly created files into many pieces that are not stored close together. The sectors are stored in blocks of nonadjacent clusters, thus creating fragmented files. This pattern continues until you begin deleting files and adding new ones.

8. P REVENTATIVE M AINTENANCE B. Recycle bin : The windows recycle bin is a holding area for files and folders before their final deletion from a storage device. Generally, you access the recycle bin through an icon located on the desktop. The recycle bin contains files that have been deleted from the hard disk, weather accidentally or intentionally.

9. P REVENTATIVE M AINTENANCE C. Temporary Files : Various application programs, such as those in Microsoft office suite, create temporary files. This action is used for the following three reasons : To free memory for other programs To act as a safety net to prevent data loss For printing

10. P REVENTATIVE M AINTENANCE D. Cookies : A cookie is a small text file that a web site uses to identify a specific computer. The file is created and/or updated on your computers hard drive each time that the web site is visited. Cookies are not a threat to your computers security. The text file contains a code that identifies you to the web serer each time a web page is accessed.

11. S PECIALIZED M AINTENANCE :

12. R ISKS IF NETWORKED COMPUTING :

13. THE END (: