HEALTH AND SAFETY

In the world of large industrial or office buildings that use large amounts of computers, health and safety is certainly a very important factor. The personal computer users also need to apply the principle of maintaining the health and safety under the existing instructions. A person who uses a computer daily for work, education, or hobby still have to pay attention to the principles of health to avoid various health problems.

Health problems that may arise from the use of computers is:
1. disorders of the eye
2. interference with the head
3. disturbances in the hands
4. interference with the body

One of the computer equipment that could potentially cause health problems is the monitor. As we know, the monitor screen emit radiation or emission of elementary particles and radiation energy. Radiation energy can remove electrons from atomic nuclei so that the atoms become positively charged and are called positive ions.

Meanwhile, the electrons released can live free or bind other neutral atoms and form negative ions. This can cause adverse effects on the atoms in our bodies. Radiation emitted by computer monitors, among others:
1. X-rays
2. ultraviolet rays
3. microwaves
4. extremely low frequency electromagnetic radiation

Health problems allegedly arising from computer radiation cataract is a disease. To that end, every computer user needs to set the computer usage time. If you have to work at a computer in a long time, try to set the time interval in order not constantly staring at the screen. In addition to radiation emitted by computer monitors, we need to consider also other factors that could potentially cause health problems, namely the position of the body, positioning equipment, room lighting, and environmental conditions (temperature, air quality and noise). Using a computer with the correct body position, will provide comfort while working. With a relaxed body position, we can work effectively and our health would be maintained. The study of how to arrange seating position is good and right in front of the computer is called ergonomics. Here is the correct sitting position when using the computer.

The head and neck

Arrange for your head and your neck straight with eyes fixed forward. With this position, you will be able to last longer at the computer and not feel tired. Position that is too flexible neck and head up or down when facing the monitor is not justified because it will make you tired.

The spine

Sit with your back upright and relaxed is the correct position when using the computer. Weight is too bent, too tilted to the left or right, can cause pain. Try to keep all your back propped up well by the chair. 

The shoulder

Adjust the position so that the shoulder muscles are not tense shoulders. Try to keep the shoulder is not too down or too upright.

The position of the arm and elbow

A good arm position is located beside the body and the elbow at an angle greater than 90 degrees.
The foot
 Use a footrest or a footrest so that the leg is in a comfortable position. Besides the things above, you need to consider the following things in order to maintain your health:
● adjust the seat height with your height
● try to distance between the monitor and the eye of at least 80 cm.
● use the monitor refresh rate of at least 72 Hz so that the eyes do not get tired quickly
● use a chair that has armrests
● set the lighting of the monitor.

Of course, keeping the general guidelines that are taught by health professionals such as eating and drinking a healthy, adequate rest, and exercise also need your attention. In terms of hardware or computer hardware, you need to consider the following factors because they affect the health and safety.

Position the monitor

Monitor effect on the eyes because of the radiation issue. To reduce the complaint to the eye, do the following things:
● place the monitor in the room with adequate lighting (not too bright nor too dim)
● position the monitor so that was right in front of your eyes
● monitor to adjust the brightness of light emitted is not too bright or too dim
● use a filter screen (monitor filter) to reduce radiation.  
Position the keyboard
Place the keyboard with a lower position of the monitor, but not too low.

Position the mouse
The location of the mouse is right is beside the keyboard. Adjust the hand you normally use for work. If you work with your left hand, put your mouse to the left of the keyboard and arrange to be left handed mouse settings through the operating system.

The position of tables and chairs
Arrange tables and chairs in such a way that the position you sit in front of the monitor more comfortable, and you can reach the keyboard and mouse with ease. In addition to his position is set, the computer hardware must be maintained properly because these devices use electricity.
Monitors
CRT monitors use high voltage electricity and require considerable power. Avoid splashing water from the monitor because it can cause short circuit or short circuit that could endanger your safety.
CPU box
CPU box that is placed on the floor and not equipped with ground can conduct electricity when we touch it barefoot. To avoid a short circuit, the CPU box should be placed in a safe, for example on a table. CPU box can be earthed (grounded) in a way connected to the ground or wall using a piece of copper wire. Since the CPU require large power consumption, then we have to keep him away from objects and animals or insects liquid to avoid short circuit. 
Cable
Arrange the cable arrangement is good and neat. Check the outlet or power source, not to get loose because of unstable power flow can potentially damage your computer hardware and cause a short circuit.

Posted in: internet and network