On completion of this page you will be able to . Avoid repair by preventive maintenance . Know different factors which affect IT and computer. . Diagnose general and common and uncommon problem solution. . Maintain general protection and tips. Common and uncommon Physical factors affecting Information Technologies (IT) or computers are heat dust, water, corrosive agents, power line problems and magnetism, etc. Easy of them may cause the breakdown of the IT system. Problem effect of these solution and tips are given below. Heat It is one of the most destructive factors that damage computers and IT. An electronic device disciple about 50% of its power as heat energy. Heat should be removed as quickly as it is produced. Heat can be checked by installing fan and running the computer in a safe temperature range. Ambition temperature range for computers should be between 60 degreeF and 85degreeF. Another source of heat is rays of sun. A Information technologies and computer should be installed in a cool place away from sun rays. Dust Dust acts as a thermal insulation on the board. It prevents heat to radiate from inside the IT and computer. A blower with compressed air can be used to remove dust. A dust free cloth wetted with water should not be used to clean the circuit board. Moreover, dust can clog air intake area to power supply or hard disk drive and space between the floppy disk drive head and the disk. To audio these problems a dust cover should be used when the machine is not used. Smoking should always be avoided near computers. The printers should be periodically cleaned by blowing out paper dusts. Water Water or liquid should not be allowed near information technologies or computers and drinking should be avoided near IT and computers. In case of accidental spilling of water or liquid on the information technology and computer, the IT and computer should be disassembled, cleaned, dried and the reassembled. Corrosive Liquids Salt in sweat and cleaning fluids are very corrosive. Oxidation of circuit contacts is another problem. When a connector becomes oxidized, it does not function properly. Tea and coffee contain tannic acids, carbonated liquids have carbonic acid. Drinking tea or coffee should be avoided near IT or computers. Power lines Problems Good and clean power supply is the most important environmental factor for a computer. Common power line problems are: brownouts, blackouts, transients and noise. Brownouts are sags for lower voltages, blackouts are the total loss of line voltage, transients are large potentially damaging spikes of voltages or current and noise is any unwanted electrical disturbance in the power line. There are two kinds of approaches to remove power line problems. They are: condition the power being supplied and providing an auxiliary or backup power source. Voltage stabilizers are normally used to condition electrical power against brownouts, transients and noise. The uninterrupted power supply (UPS) stores energy when the line voltage is present and then delivers power to the computer when a blackout occurs. The UPS should be used when it is important to save date and files against total loss of power. Computer Magnetism Magnetism causes permanent loess of data on hard or floppy disks. Magnetic is field is present around phones, electric motors, stereo speakers, cathode ray tubes (CRT) etc. Stray elector-magnetism like radiated elector-magnetism interference (EMI), power line noise (due to over voltage, under voltage, transient spikes and surges) and electrostatic discharges can cause problems for computer. Computer Virus A computer virus is a piece of software which infects data or disks and has multiplication capability of it. They affects computers by deleting files, corrupting screen displays, corrupting data, slowing down operation of a system, displaying unwanted messages etc. A sophisticated virus can spread undetected for a long time. A boot virus attires boot sector of a disk. Viruses affects files with extension EXE, COM, SYS, DRV, OVR, BIN, Some common viruses are C Barium, Jerusalem, Stone (Marijuana). Vienna, April First, Norton, Quick Heal, Kaspersky, Dhaka virus. PDF files can be read online: Generally, if you do not have a PDF reader software is installed you can not read PDF files. If you read a PDF file to read online, so there is hesitate. Although PDF files can be read online site. However, users of Google Chrome or Firefox without installing the Google Docs viewer macaur a plugin that allows you to read PDF files. Add to the Firefox-Adons.
From the Google Chrome extension for http://www.addons.mozilla.org/en-US/firefox/addons/14814/ http://www.chrome.google.com/extensions/detail/eg1jjohbmnnpicoiddaapkpejfpnmmpe choose to install. Click on the PDF link to a website since it will automatically load and appear in Google Docs Viewer.
Keep your mobile phone virus free: IT is one of the viruses in the program, without which the user can manually copy the. With known viruses, but we still calcute machine phone with many of the virus was not met until now. Because they fear that the virus is still phone don't stand at the time. However, many fear that, over the next two-one year as of viruses calculate machine phone viruses will stand up to normal. The phone is configured with a little high, they are little more than fear. Mobile viruses typically cause blutooth, MMS etc. than the spread. Users should be careful in front of the mobile phone.
