PC SYSTTEM MAINTENCE

keywords:
system maintenance 系统维护
backup 备份 备用
removable hard disk 可移动硬盘
storage medium 存储设备
surage medium 浪涌抑制
ups不间断电源
cd 光盘
dvd(digital video disk)数字视频光盘
zip disk 大容量磁盘
troubleshooting 故障查找
diagnose 诊断
once you acquire a pc ,you should develop a set of careful practices to protect your software, hardware, and data from damage and costly mistakes, three importance areas in this regard are system backup, maintance amd protection of hardware amd problem detection and correction.
1.backuo procedures
creating a backuo means making a duplicate copy of any file you can not afford to lose so that when a problem occurs, you are confronted with only a minot irritant rather than an outright castastrophe, theoretically, you can back up any file on your computer system. the backups you create - bu coppying individual hard disk,recordable cd , tape, or virtually any other removable storage medium, the backup copy should then be stored in a different physical location to protect against loss due to a file or natural disaster.
2.Equipment maintenance and protection
PCs consist of sensitive electronic devices ,so users must treat them with appropriate care.
1)surge suppression
on the rest of best devices to have on your computer system to minimize the chance of unexpected damage is surge supperssor, A supperssor, which is installed between your computer system and the electrical outlet being used to provide power to the pc . is a hardware device that prevents random electrical power (power speakers. printer, scanner )should be plugged into a surge suppressor.
Instead of a plain surge suppressor, some user have an uninterruptible power supply unit, this device ia surge suppressor with a built-in battery, the latter of which keeps power going to the computer when the main power goes off due to a lightening storm, a brownout, damage to an outside cable, or othe reason.
2) storage media care
user percautions with disks ,haed disks. cds, and dvds to safeguard any programs and data stored on them. disk may look like inert slabs of plastic, but they are actually extremly sensitive storage media that work well over time withe appropriate care,you should nvever touch the actual surface of a disk or optical disc. also keep magnetic media. sunch as floppy disks,zip disks, and removable hard dirves, aways from magnetic objects includeing stereo speakers, avoid extreme temoeratures withe any storage media.
3)dust heat and static
Dust particles circulating in the air can settle on a chip, causing a short circuit.
Desktop and tower system units also generate lots of heat and require cooling fansm when placing your system unit on a desktop or on the floor, make sure it is in a place where the ventiltion is adequate, especially around the fan outlet.
Static electricity is especially dangerous decause it can damage chips, desory programs and data in storage, or disable your keyboard, if you have a lot of static eletricity at your location, you might consider buying an antistatix mat for under your workstation chair or an antistatic pad to put under your keyboard so that the electrical discharges from fingertips do not get transferred to your PC,
3.problem detection and correction
if you work with computers for any length of time, at some point you will probably have an experience system one day and get no response, perhaps your secreen will begin flickering badly every few seconds and so forth, when sucn an event takes place, you will need to troubleshoot to isolate the underlying problem, if the problem is serious enough, assistamce from an outside source may be necessory,
Troubleshooting refers to actions taken to diagnose or solve a problem unfortunately, many problems are unique to specific types of hardware and software, so no simple troubleshooting remebly works all the time, nonetheless, the following simple steps and guidelines can help you to identify and correct a number of common problems.