When I was a kid, we had a social life, and it was called ‘outside’. And look at today’s kids – Facebook, PlayStations, iPhones, Blackberries, and not to forget, television sets with 300 channels. My grandmother used to say, one day when technology would hover, humans would stop thinking before acting. This statement makes much of a sense, and why not? Technology has sidelined ‘patience’ from our lives. Every second that passes by is making us all the more dependent on technology. Some may call it a bliss, but some differ. They may agree to the fact that technology has eased up life, but they also believe that it has cast differences between us and our close ones. Think of it, with the help of Internet technology, we no longer meet our loved ones in person, who may be living in the same town as we are. Instead, we call, chat, or e-mail them.
What’s more, we become anxious when the coffee machine takes a millisecond more in dispensing the coffee. We become fretful when a song takes a
Talking While Driving?
The National Occupant Protection Use Survey found that, at any given time, approximately 660,000 drivers in America use cell phones or operate electronic devices while driving.
Bluetooth technology is a communication system that is used in place of wires or cables in order to connect various devices. Right from mobile phones to headsets, Bluetooth technology is used everywhere. Many individuals are so addicted to their cell phones, that they have a Bluetooth headset plugged into their ears all the time. However, these devices may pose a certain health risk, if used frequently. Bluetooth devices emit microwaves, and prolonged exposure to such waves may cause health problems.
Let us have a look at the various dangers of Bluetooth devices.
Is Bluetooth Technology Harmful?
Before we talk about Bluetooth devices, let us see if Bluetooth technology is harmful. Bluetooth is transmitted through microwave radiation. The range that this radiation uses is 2.402 GHz to 2.480 GHz. Microwave frequencies have a short wavelength, a rapid oscillation rate, and operate at a very low power. Also, the penetration depth of these waves is about
We are shifting towards an increasingly wireless world. Telecommunication has progressed by leaps and bounds, since the invention of the first wireless telegraphs and today, it has truly liberated us from the shackles of a wired world.
Need For Signal Boosters
Though Wi-Fi gives you the opportunity to go totally wireless and save a lot of wiring hassles, as well as wiring costs, it comes with its share of shortcomings. To understand what are the limitations of Wi-Fi, one must understand how it works.
A wireless local area network (WLAN) is a network of computers, linked without any wires and connected by transmission of electromagnetic (radio) signals. Wi-Fi is the technology that has made it possible. Wi-Fi technology provides wireless internet access, through the transmission of radio frequency carrier waves.
Electromagnetic signals weaken, with increasing distance from the source. In wired networks, one can simply access faraway points, by bringing in longer connecting cables, but in wireless networks that’s not possible. The signal strength wanes, as you go away from Wi-Fi transmission.
Using a computer to write about computers is like searching for ‘Google’ on Google! Computer technology is so much a part of our lives, that we cannot imagine living without it. Computers serve as efficient data storage systems and excellent information processors. They can store, organize, and manage huge amounts of data. Moreover, they operate at incomparable speeds, thus saving human time and effort to a large extent. True, they are an integral part of our lives. It is said that inventions change the way we live. Computer technology is a classic example of this adage. It has indeed changed our way of living.
Computer technology that is in daily use today finds its roots in the oldest computing systems like Abacus and slide rules. The evolution of computers can be traced back to calculators and punched cards, which were some of the earliest computing devices. Analog computing devices evolved into digital information processors and from then on, there was no looking back! For a closer look at the major events in the computer history, you must go through the full timeline of computers.
For many years after 1960, when the third generation computers were created, desktops remained to be
The above queries lead to a wide and intensely debatable set of conclusions. This is because, technology is a boundless horizon consisting of myriad fields, from the environmental conditions to governance issues, affecting millions across the globe. Therefore it follows logically that, technology affects every living soul, whether directly or indirectly is a relative matter. If the rampant use of pollutants in the industrial world increases rapidly, so does the negative environmental effects, which impacts agricultural production in the most remote corners of the planet. Thus, a person may or may not be using technology directly, but the effect of its use is evident, even in case of no use, by many people.
Therefore, whenever the effects of the use of technology on humanity is considered, the entire human race, as a whole is to be considered. Although, various sections of society are affected in various ways, modifications in the lifestyle of every associated being is to be reviewed. From the invention of the simplest of human accessory like clothing, to the most complex research such as the human genome project, there is no area of human activity that is out of bounds for technological intervention.
A Broad View on
Man has worked hard to improve technology consistently, to do various tasks, fast and effectively. Many nations have succeeded in building great infrastructure and achieve stupendous progress due to developing advanced technology before the other nations. Today, every nation strives to get the latest technology for the benefit of its citizens. Technological progress is vital in the fields of business, education, as well as health care.
Technological advancement has helped to introduce many positive changes in the educational sector. New methods of learning and teaching have made the process simple and more interesting. Computer technology in schools and colleges has helped explain subjects properly and in detail and this has reflected in the overall performance of the students. The Internet technology has been a revolution for the educational sector as it is an ocean of information. Students can search for the concepts which they learn in the books on the Internet and find out more information on the same. This will increase the depth of their knowledge. Distance learning programs have become possible only because of the Internet. Students who cannot attend colleges due to financial reasons or due to traveling problems can sit at home and study
A computer program is nothing but a set of instructions, which when executed, give results to a certain operation. These instructions need to be written logically, i.e, they should be in a flow, and before writing the program, you need to decide the flow of the program. Remember, the computer is a very intelligent machine, but it can do only what you ask it to do. So the program that you are writing will go wrong, only if there is something wrong with its set of instructions. Problems arise in computer programs due to manual errors. Before going into further detail, let us try to understand the different levels of programming languages.
At root level, a computer works in bits and bytes. It only understands binary language, which consists of digits 0 and 1. You may write a program in whichever language you want, but for the computer to understand and execute it, it must be converted into the language of 0s and 1s. Writing a program in machine language, is definitely difficult. It is not possible to memorize a long string of 0s and 1s for every instruction that needs to be executed.
Internet, by definition is a network of networks that interact with each other through exchange of data packets. The Internet hosts an enormous information base and carries numerous information resources and services. Here is a look at the buzzwords of the Internet world, a list of Internet terminology.
Internet Structure and Design
Here is a list of terms associated with the structure and design of the Internet.
The acronym stands for Advanced Research Projects Agency Network. ARPA of the United States Department of Defense developed ARPANET, which became the world’s first packet switching network. Internet is the successor of ARPANET.
Internet Service Provider
A company, which provides users with access to the Internet, is known as an Internet service provider or Internet access provider. ISP, as it is called, offers email accounts and other services like remote storage of files, to its customers.
The Open System Interconnection Model is used to describe a layered communication and network protocol design of a network. It is composed of seven layers, each of which performs certain functions and provides the layers above it with some services.
Internet Protocol Suite
It is a set of communication protocols, which are
Well, well, well…. the desire to be truly wireless may be the driving force for modern-day technology but the desire to capture and preserve memories goes a long way back in the history of human civilization. Even before they learned the use of coherent vocalizations for communication and expression purposes, our cave dwelling ancestors recorded the memories of their primitive lives and exploits in the wilderness in the form of cave paintings. As Homo sapiens became more and more civilized, technology in all spheres of life just kept getting better and ways and means of capturing and preserving memories became jazzier and more efficient. Various types of recording devices, both audio, visual and AV, have come and gone but the one that has made the most revolutionary impact is undisputedly the camera phone! Wondering why? Well, this is one device that allows you to capture visual memories in their still as well as moving frames besides taking care of all your communication and connectivity requirements! The following segment seeks to briefly acquaint you with a few significant milestones in camera phones history. So, click….. oops! I mean, scroll right ahead!
Brief History of Camera Phones
Any idea which is/was
As life progresses, new information emerges, in turn leading to further progress of mankind. Information remains to be like a limitless ocean. It is infinite and extends till eternity. Information technology (IT) involves the management of information on computer-based information systems. IT deals with the use of computers to store, process, and retrieve information. The construction and design of a safe, reliable, and an always-available information infrastructure is an important constituent of information systems.
It is the collection of communication networks and the software associated with it. It refers to networks and software, which support interaction among people and organizations or the currently available networks and the prospective facilities that they will make available. It includes the Internet, the telecommunication networks, and the embedded systems as also computers.
Internet that is regarded as the network of networks is the information infrastructure of today. It is a collection of interconnected computer networks that transmit data in the form of packets using the Internet Protocol. Each of the networks carries information and services like mail and file transfer. World wide web, a collection of documents and other resources, is a service offered by the Internet.
Information infrastructure design is concerned with
The Internet has grown to become the most popular medium used for communication and sharing information. It is a network of computers that are connected to each other, allowing sharing of information.
Nothing has connected and brought people together on a common platform the way the Internet has. It has turned out to be one of the most important inventions in the history of mankind, and has become a way of life for many people around the world. Most people have become used to relying totally on the Internet for almost everything they wish to do, whether in their personal or professional lives.
Life without the Internet would seem like a nightmare to most of us now. So what would happen if one fine morning, you woke up to find the Internet has no existence whatsoever in your life? How drastically would your life be impacted and altered?
Before we undertake the arduous task of imagining a world without the Internet, let’s take a look at some important Internet facts and figures:
Facts About the Internet
➡ The United States has the third largest number of Internet users (21%) in the world, with Asia (36%) and Europe (29%) taking the first and second
When posed with such a question, most of us think that we own a computer, we have a telephone line or a satellite TV cable, and a modem; that’s all there is to know about how the Internet works. But, this answer sums up only a small percentage of the whole story.
The Working of Internet
Working of the Internet is based on a series of protocols. A protocol is a set of rules or a kind of agreement, wherein two parties agree to abide by a set of rules. In this case, these rules govern the transmission and reception of data, to and from a computer.
To know how protocols work, it’s important to understand the protocol layers. The network is firstly divided into various layers and protocols that are set for each of these layers. Let’s see what the protocols are, according to layers:
Application Layer Protocol
The application layer acts as the interface between the user and the system. This layer has application-specific protocols like hypertext transfer protocol (HTTP), e-mail, chatting, or file transfer protocol (FTP) for downloading, etc., which communicates with the subsequent TCP layer.
Transmission Control Protocol (TCP) Layer
Every application requiring network access communicates with the TCP
Internet has become a crucial part of the modern lifestyle that helps us find information, understand concepts, share our thoughts and stay connected with everyone else on the earth. Because of the Internet, everything in the world is just a click away. It is this wonderful creation that has made the proverbial ‘small world’, smaller still. However, the prestigious title of the ‘inventor of the Internet technology’ cannot be given to a single person or organization. It is the symphony of many minds that has helped in the creation of this model of self-regulated functioning, that can be easily called the biggest democracy in the world.
Many people erroneously believe that the Internet is the same as the World Wide Web (WWW). The Internet is a huge network of computers including servers connected by cables across the world whereas the WWW is the collection of all the websites available on the Internet. The credit for the invention of the Web goes to Tim Berners-Lee who created it as recently as 1990. To know about the invention of the Internet we might have to delve a little further.
The First Step
The first person who thought of
Internet, as we know, is a large network of networks, which communicate with each other by means of data packets. By definition, it is a global system of interconnected computer networks that use the TCP/IP protocol to communicate. The Internet is regarded as the largest information base. And today, it has become an integral part of our lives. Its access methods have also evolved over time, starting from dial-up connections, slowly graduating to broadband, developing further into wireless access, and then to cellular technology. With the increasing and improving means of accessing the web, its use and popularity also grew. Owing to its easy availability, high access speeds, and the variety of services offered, Internet is the need of the day.
We depend on it in more ways than one. We access news websites to update ourselves about the current affairs, we rely on the communication platform it offers to communicate with the world. Be it using a social networking website to post what’s happening in our lives, or using an application like Skype or Viber to talk to our dear ones; web is the medium. Be it to access information or to entertain ourselves, Internet is our first
What is a Podcast?
Podcast is a program (as of music or talk) made available in digital format for automatic download over the Internet. – Merriam-Webster
Simply put, podcasting allows you to download media files from the podcasting website and upload the same on your portable devices. The name of this service is a portmanteau from iPod and broadcast terms. Though the term is mostly associated with Apple, it doesn’t imply that you can avail this service only if you are an iPod user. You just need to have an Mp3 player for using this service.
If downloading the media files is what podcasting is all about, then why should you use it over the free downloading services available on the Internet? The reason you should go in for podcasting is because unlike the other services, podcasting allows you to subscribe to the podcast via an RSS feed, and the media content will be downloaded to your portable devices automatically. You can subscribe to services that you are interested in, like video, audio, newsfeeds, etc., and all this will be downloaded on your computer.
As mentioned earlier, podcasting is associated with media content. However, this media content can be audio, video,
Both the Wi-Fi (wireless fidelity) and the Bluetooth standards are based on separate protocols. Let’s try to understand the difference between Wi-Fi and Bluetooth technology, comparing and contrasting them, on the various aspects of their working.
Wi-Fi has been a favorite for making LANs (Local Area Networks) at homes and offices, right from the time of its introduction . It is very obvious that the process becomes easy at home, if you do not need to integrate LAN cables in your system to form a network, to share the Internet connection. In offices, the use of wireless LANs causes a reduction in the cost of the LAN installation. The range of Wi-Fi is hence quite high, around 300 feet from the wireless networking node. Bluetooth, on the other hand has a short range of around 30 feet.
As already mentioned, Bluetooth and Wi-Fi work on different standards. Recent Wi-Fi installations are based on 802.11n standard. Bluetooth devices currently follow the Bluetooth 2.0 standard.
Connection and Installation
Bluetooth devices do not need any installation or configuration. The working of Bluetooth devices is very simple and hence they do not require to be configured. You can simply select the other Bluetooth
Bluetooth is a wireless technology that can be used for transferring data over short distances. The typical range within which data can be sent from one Bluetooth device to another, is 100 meters. These devices operate in the radio frequency range. The typical frequency of a Bluetooth device is 2.4GHz. It is designed to provide a simple, easy and secure way of data transfer, in a wireless and quick way.
Connecting Bluetooth Devices to your Computer
Say you want to use a wireless keyboard with your computer. The keyboard will connect to your computer using Bluetooth. If your computer has a built-in Bluetooth antenna, then no additional hardware is required. If it doesn’t, then you will need to use an external Bluetooth USB adapter or dongle. This adapter acts as a plug-and-play antenna, that will allow your computer to pick up the radio signals. Once you install the adapter on your computer, your computer will be Bluetooth-enabled, as long as the adapter is plugged in and turned on. The following steps illustrate connecting your computer to a smartphone in different ways, based on operating system model.
- Plug the Bluetooth adapter into your computer. Make sure it
Wi-Fi is a wireless technology used in home networks and to connect mobile phones, computers, and other such electronic devices over a wireless network. It is the 802.11 IEEE standard. In this Buzzle article, we tell you how Wi-Fi works.
The wireless adapter of a computer translates data into radio signals and transmits the signals over an antenna. The transmitting antenna is generally connected to a DSL or a LAN-based Internet source. The wireless router in the network receives the signals and decodes them. The router uses an Ethernet connection to transmit the information over the Internet. Similarly, data received from the Internet passes through the router which converts it into radio signals. The wireless adapter of the computer (or any device using the connection) receives the signals.
Wi-Fi implements wireless local area network (WLAN) communication between computers using the 2.4, 3.6, 5, and 5.9 GHz frequency bands. 802.11 provides 1 or 2 Mbps transmission in the 2.4 GHz band. While 802.11a provides up to 54 Mbps in the 5 GHz band, 802.11b provides 11 Mbps in the 2.4 GHz band. 802.11e adds the Quality of Service support. 802.11g provides up to 54 Mbps in 2.4
An outsider who knows how to get into your Wi-Fi can not only use it for himself, but he can also hack the data on your computer. This is very dangerous as your computer’s security is compromised. The hacker can be doing something illegal and the police would catch your IP instead. Detecting the user can be easy, but it is quite difficult to ascertain the identity, especially if all you have are the history records of his/her usage, and no addresses. Once you know if your Wi-Fi is being leached, there are some steps that you can take to prevent it from happening again. The thing is, they connect to your Wi-Fi the same way as you do, so it pays to have some figurative walls around your Wi-Fi signals.
Basics of a Wi-Fi Connection
If you don’t know much about the components (both hardware and software) in your Wi-Fi system, it would be good to know the basics of what they are, to work on them.
- The signal for your broadband Internet connection is brought to your house through a cable or satellite modem, or a digital subscriber line (DSL).
- The wireless router is attached
Long range Wi-Fi antennas are the driving force behind long range wireless networks. An antenna is a device that transmits and receives electromagnetic signals. A transmission antenna converts alternating voltage electrical signals into electromagnetic waves and a receiver antenna converts electromagnetic signals back to electrical signals. A long range Wi-Fi antenna is used for providing Internet connectivity, or wireless connectivity, between two geographically separated, distant points. Long range antennas can pick up network signals from distant networks and thus bring the Internet to your home, no matter where you live. These type of antennas are often needed to increase the range of one’s installed Wi-Fi system.
What is Wi-Fi?
Wi-Fi, short for wireless fidelity, is a certification standard issued by the IEEE (Institute of Electrical & Electronics Engineers, Inc.). Colloquially, it is also used to refer to Wireless Local Area Network (WLAN) technology. It is a technology that provides wireless internet access through a radio link, and has enabled people to access Internet on the move. Let me now introduce you to the various types of Wi-Fi antennas, that you may choose to improve the signal reception of your wireless network.
Types of Long Range Wi-Fi Antennas
Long range antennas are like