Whoever asked what is the best creature by people to change our life will answer that is a computer. In fact, our life style has changed a lot since creating the first calculator by scientist, Pascal in 17th century. That is the originator of present computer. Computer makes our life change faster and more comfortable. However it also becomes cause of many kinds of syndromes. 

Mental Syndromes.
"Two-dimension Complex" is a compound word of two-dimension syndrome and three-dimension complex. Two-dimension place means cyber place and three-dimension place means actually living space. People who suffer two-dimension complex tend to evade three-dimension place and indulge characters of computer games or comics and so on.
"Cyber Autism" is symptoms shown perfect different behavior aspect between cyber space and actual. It is caused by excessive immersion in cyber space like personal computer (PC) communication. Sitting a seat in front of computer people who suffer cyber autism send and receive e-mail and chat with many kinds of people of all over the world. However he or she do not communicate or mix with others in reality. Toxicosis PC communication or Internet is species of cyber autism.
"Webaholism" is a compound word of web meant world wide wed and holic meant addiction. "Webaholics" is like that word.
"PC Reset Syndromes" is pathology phenomenon that raises a serious social problem. It spread among teenagers. It originates thought that people can start something not to suit them again anytime like pressing reset button when computer does not work. People who suffer PC reset syndrome tend to think a criminal act easily, because they have an illusion between cyber space and reality. In addition they think that is okay they can press reset button in reality.
There is a case that people who works with computer all day gain energy from computer's electromagnetic wave. "Electromagnetic wave syndrome" is symptoms being thrown into confusion as separated computer on the contrary to that case.
Last, there is "Version-up Syndrome". People who suffer version-up syndrome can not help buying newest computer or computer's adaptability tools.

Physical Syndrome
"Visual Display Terminal (VDT) Syndrome" is representative example of Physical syndrome by computer. In these days, VDT with a Braun tube of PC, Word processor and walk station and so on is used a lot as society become office automation. People who work with seeing display long time have diversity physical symptoms. They may have a shooting pain in their eyes or heir sight has become poor. They also may have headache, vomiting symptom and a feeling of uneasiness.

VDT syndrome occurs many social problems. There are many cases that people who used VDT a lot complain of headache and visually handicap. Therefore, it is frequent to evade and refuse working with computer. With this, office hours adjustment and improvement of work environment are raising labor and management's head. Specially, in case of women, it is increase to leave office to worry about a side effect when being delivered of baby. Therefore management make pregnant women rest enough and do not seat in front of computer. Also, management attach filter tool in front of computer screen to protect employees. The Ministry of Labor add VDT syndrome to professional disaster. And people who development these electronic equipments investigate way to protect workers like improvement of display, angel of screen, a location of keyboard, program to adjustment work time.

USA national occupation safety health center present these way to prevent VDT syndromes. 
1) Improvement of work instruments like screen's height, brightness, chair's height. 
2) Arrangement terminal 10~20degrees under the eye  
3) Installation protective goggles 
4) 15 minutes rest per working one hour
5) Periodical ophthalmology examination

There are social precautionary measures as above. However, to protect against these syndromes people have to endeavor in person. People have to periodical examination of health, especially part of eye and rest time after the regular work time. Furthermore, consultation with expert is good way to protect mental syndromes.

Planning is one of the programs to protect people from VDT syndrome. Children suffer VDT syndromes, too. Children's control ability is inferior to adults'. Therefore many parents use this program to protect their children from this syndrome. Parents adjust their children's time spent using a computer by password. 150,000 parents use this program in Korea.

Main cause of both mental and physical syndromes is spending a lot of time using a computer. Therefore this program protects children from many kinds of syndromes by computer.

The computer is only a fast idiot; it has no imagination; it cannot originate action. It is, and will remain, only al tool of man. Its source is American Library Association's 1964 statement about the Univac. Like this said we do not indulge but use computer. Many people turn on the computer with some purpose. However, they forget the purpose and use computer for miscellaneous affairs like on-line shopping, game. This way they spend valuable time in vain. When turning on the computer, we keep in mind purpose to use computer. Therefore, use computer wisely and efficiently.

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