1. environmental cleanliness: the computer should be placed indoors in a clean environment, because the dust will contaminate the computer keyboard, disks, monitors and the host circuit boards and other important components to cause major failures, so the computer using the environment must be kept clean.
2. Indoor ventilation: the computer at work, will emit a lot of heat. If the heat is not good, the indoor temperature is too high, long-term use of the computer life will be reduced, so we should pay attention to indoor ventilation.
3. Temperature and relative humidity: Temperature should be maintained at 10 ° C ~ 35 °, relative humidity in 30% -80%. If the family does not have air-conditioning equipment, it should be turned on as little as possible. In the hot summer, the computer room should be equipped with air conditioning equipment.
4. Away from electromagnetic interference: In the use of computers should try to make it away from the strong magnetic field environment, the stronger the magnetic field will make the computer some inexplicable failure. Such as the monitor may produce a screen, jitter, speaker noise. This electromagnetic interference mainly comes from wireless communication equipment, high-power electrical appliances and larger power transformers, etc. 5. 5. Computer requirements for the AC power system
Power instability, will affect the normal work of the computer. Do not try to use the computer when unstable, the computer can not and other equipment **** with a power outlet, should use an independent power outlet. Such as: electrical equipment, such as photocopiers, refrigerators and air conditioning machines,
6. Grounding
The power supply of the computer must have a good grounding system, do a good job of anti-static work as a safety guarantee.
Next PPT demonstrates the picture of too much dust inside the computer. Ask students what they think about it? What will be the impact? Further increase student interest. After the students answered to explain: the use of computers in the process, due to the host of the various components of a long time to work and the impact of the surrounding environment, the host of the internal dust. Will affect the operating efficiency of the computer, the situation will be serious so that the computer can not work at all, and even burn the CPU and other important components. Cleanup chapter commonly used maintenance tools General maintenance tools commonly used in our computers PPT presentation of the maintenance tools picture, and introduce its function: 1. Cleaner
The monitor for a long time in the office conditions of work, often making the surface of a layer of dust, so that the display of the contents of the fuzzy, which is extremely unfavorable to the display of the monitor and human health. The main reason for this is that the static electricity accumulated on the surface of the display adsorbed dust in the air, making the display content becomes very hazy, some users increase the brightness of the display, which is very unfavorable to the display itself and the operator's health. So clean the monitor and other parts of the computer surface dust is also very necessary. Cleaning, to choose a special monitor cleaner, do not use shoddy products. Cleaning method is very simple, with a clean soft cloth dipped in special cleaner repeatedly wipe the surface of the monitor and other components. 2. brush Generally used for the keyboard, the motherboard and so on some of the dust cleaning with.
3. Vacuum cleaner
Vacuum cleaner is mainly used to remove the dust inside the computer and printer. Dust is the enemy of the computer, many computer components due to a large amount of dust, making the computer can not work properly. If the dust is too much, it will affect the internal heat dissipation, resulting in circuit board components on the circuit board break or short circuit phenomenon, and in serious cases will burn the CPU or the board, so you must use a vacuum cleaner to suck away the dust, and can not be used with other tools will be blowing dust flying, which will only cause the dust in the host case to move, not at all to achieve the purpose of cleaning the computer. Users who are in a position to do so can consider acquiring a small vacuum cleaner, which has a good dust removal effect. 4. Clean CD-ROM
Similarly, the laser head of the CD-ROM drive, if contaminated with dust, in the process of reading and writing, will affect the intensity of the laser emitted, but also make the optical drive can not read out the data correctly, so every certain period of time should be cleaned. When cleaning, use a cleaning CD-ROM. The cleaning disc is also a special disc with a cleaning agent. Cleaning Chapter Maintenance Operations
1. Cleaning the Mainframe Section
The mainframe section of the computer, despite being protected by a case, is still contaminated with a lot of dust due to its prolonged operation under normal office conditions. If you don't clean it in time, it will affect the heat dissipation of the chip, cause poor contact with the connector part, and also seriously affect the working speed of the computer. Cleaning, the first brush on the surface of the board cards on the dust gently brush, and then vacuum cleaner once again, the dust will be sucked clean.
2. Cleaning the cooling fan When cleaning the CPU cooling fan, it is usually removed. Use a brush to brush along the fan motor axis while turning, and at the same time, the heat sink should also be brushed together, so as to achieve the cleaning effect. Furthermore the fan has been running for a long time and has accumulated a lot of dust at the shaft. Remove the label from the fan and get a little lubricant. Just put a few drops on the spindle.
3. Clean the optical drive The laser head of the optical drive if contaminated with dust, in the process of reading and writing, will affect the intensity of the laser emitted, but also make the optical drive can not read out the data correctly, clean, use a clean CD-ROM, is in the process of playing the CD-ROM, the method is as follows: put the clean disk into the CD-ROM drive, open the "CD Player", and then perform the different sounds. ", and then switch the operation of different sound channels, you can carry out the cleaning of the CD-ROM drive. 4. Clean the monitor
monitor with a long time, in its surface covered with a layer of dust, so that the content of the display blurred. When cleaning the monitor screen and casing, use a soft cloth with a little special cleaner, gently wipe can be. In addition, for other peripherals, such as printers and scanners, etc. cleaning method is also the same, need to be maintained regularly.
5. Cleaning the mouse and keyboard When cleaning the mouse, use a soft cloth with a little detergent or alcohol, wipe its shell. Cleaning the keyboard, first of all, the keyboard upside down, gently tap the back of the keyboard, some dust will fall, and then, then turn the keyboard over, with a vacuum cleaner to remove, and finally with a soft gauze dipped in a little detergent, the appearance of the cleaning can be
Two, the computer's system maintenance
If we usually operate the system improperly, it is easy to make mistakes, will make the scheduled job can not be completed, may lead to loss of data. Can not be completed, may lead to the loss of data, can not be normal boot, often crash and so on some of the errors, resulting in irreparable damage. Therefore, it is very necessary to do a good job of routine maintenance of the computer. 1. switching order: when you turn on the computer, the first peripherals and then the host, such as monitors, printers, scanners, etc., and then turn on the power of the host; shut down the first host and then the peripherals, the order is just the opposite of the power on. That is, first turn off the host power, and then turn off the peripheral power. If you turn off the computer immediately after the power on, the power supply unit will produce a sudden large impact current, resulting in damage to the devices in the power supply unit, but also may cause sudden acceleration of the hard disk drive, so that the disk is scratched by the magnetic head. So every time you turn off and then turn on, you must ensure that you must wait more than 10 seconds. 3. computer stability: In the process of computer operation, do not arbitrarily move the main chassis, and to ensure that the stability of the computer workstation, a variety of equipment should not be moved casually, do not insert and remove a variety of interface cards, and do not load or unload external devices. If you need to change, it must be in the case of shutdown and disconnect the power cord. 4. Drivers: Drivers are important system software to ensure the normal and effective operation of computer hardware, if the driver is not installed or installed incorrectly. Will make the hardware can not play normally, and sometimes there are conflicts and a series of problems. Must be correctly installed a variety of drivers, such as graphics cards, sound cards, network cards, etc. 5. Virus: The harm to the computer is well known, the light is to affect the speed of the machine, the heavy is the destruction of files or caused by the crash until the hardware is damaged. So we should be good anti-virus anti-virus work. 6. optimization and clean up the computer: Windows will have a large number of junk files in operation, it not only takes up a lot of disk space, but also slows down the operation of the system, so it should be regularly cleaned up the junk files, registry, and so on, but also to optimize the system. Further improve the performance of the computer.