Do Laptops Give Off Radiation
The amount of fame laptop computers have received over the past few years is enormous. It has lessened the manual labor of a human and in turn, has proved to be the most efficient, quickest and handy computer device created ever in the world of technology. But somehow apart from all the positives of an electronic gadget, there are always some negatives that bound to come about. Like for instance, the first thought that comes to our mind when we use an electronic gadget like TV, computer, etc; is do they emit any sort of harmful radiation? And this question validates when our body begins to show some unusual symptoms of illness or sickness and that’s how we learn about the side-effects of using laptop computers, TV, microwave and so on. On daily basis, we humans expose ourselves to high levels of electromagnetic radiations when we utilize certain electronic appliances. The use of a microwave or an oven in the kitchen, is often employed for cooking or baking specific dishes. The radiation given off is harmful to an extent. Next, we utilize cell phones, wireless Internet, computers, laptops, digital TV, etc., etc. All of these electronic appliances mainly give off different levels of electromagnetic radiations. But today, these appliances have become such an integral part of our everyday life, that thinking of surviving without them is almost impossible.
The most used device today is a laptop computer. Be it in terms of convenience or portability, these devices are expended by every business men, college students or an entertainment junkie. In general, today’s modern age has a heavy usage of laptops, but has anyone ever thought do laptops give off radiation? Is it harmful in any way; yes/no/maybe? We all really need to know this vital piece of information. Read the rest of this entry »
History of Internet Security
Posted by admin in Internet Security on December 5, 2011
What is Internet Security?
This subject came into being with the advent of the Internet. There are three basic issues – confidentiality, integrity and availability. When an unauthorized person reads or copies information, it is known as loss of confidentiality. When the information is modified in an irregular manner, it is known as loss of integrity. When the information is erased or becomes inaccessible, it is known as loss of availability. Authentication and authorization are the processes of the Internet security system by which numerous organizations make information available to those who need it and who can be trusted with it. When the means of authentication cannot be refuted later, it is known as non-repudiation. Internet security can be achieved through use of antivirus software, which quarantines or removes malicious software programs. Firewalls can determine which particular websites can be viewed and block deleterious content.
History of the Internet
In the beginning, the Internet did not exist. There were no computer networks to be found. There was no e-mail facility, and people used postal mail or the telephone to communicate. The extremely busy sent telegrams. Few people used ugly names as a euphemism for others whom they had never met. The Internet has dramatically changed all this. The Internet, started as the Advanced Research Projects Agency Network (ARPANET). It was a tiny, isolated and restricted community. Read the rest of this entry »
Why is Information Technology Important
Posted by admin in Information Technology on December 3, 2011
Definition of Information Technology
Information Technology or IT, also cited as Information Service (IS) or Management Information Service (MIS), can be defined as the development, design, study, implementation and management of computer related information. It can also be defined as the use of computer (hardware and software) to manage information.
What is Information Technology?
In the era of 1960s and 1970s, information technology was limited to people working in the banking sector, mathematical engineers and computer scientists. In 1980s, the arrival of personal computers made it possible to be used in many more sectors and gave rise to a surge in the field of information technology. Previously, for the purpose of business, storage tapes were created by a single network administrator to interconnect employee workstations. The information stored in this workstation was placed in a server farm, located far off from the industry. However, now people have started communicating, using e-mails instead of snail-mails. It is an industry which deals with the usage of computer hardware and software and networking. Information technology has accomplished a lot in the 21st century. IT is a combination of computer and communication technology. It is the transfer of information from one peer to another. Read the rest of this entry »