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3G AND 4G

THE DIFFERENCE ABOUT 3G AND 4G

             Like a "tsunami " or flood of information about the arrival of 4G internet technology , many customers and users are wondering about what exactly is the difference between the new 4G network with 3G networking that is steadily gaining ground in the hearts of hardcore users of wireless technology. If we see ads about higher speeds and fast often in post without telling the consumer about the right explanation . " Internet Provider " like Maxis , Celcom and etc are clearly taking a wait and see for using 4G technology and seem less convinced of the need for the user to explore the 4G technology . Handset manufacturers are often made ​​comparisons with competitors , their competitors by using technologies that have not "matured " and is still ambiguous.   

                       
          The easiest way to explain the difference between 3G and 4G can be explained by a simple analysis of the main purposes why this technology was invented. The third generation or 3G (3rd Generation) wireless internet was designed based on the technology in the early stages of the design for the purpose of making a phone call .Because phone calls require transmission of large amounts of data that are less than intenet surfing , 3G internet technology invention is only intended for the root volume delivery requirements or transfer data with moderate speed as the need to transfer large amounts of data to watch streaming video on the internet . This is a 3G mobile phone technology on the market sometimes problematic when users try to access the streaming video or website that draws a large number of Dathan .            

             To meet the challenges posed by the use of wireless internet and internet core user needs , the creation of 4G wireless internet , designed to cover communication and data transfer more than a phone call. Handling phone calls facility is considered to be too easy to have 4G technology, as this technology is designed for Internet communication , streaming video , watching TV and every task that previously could only be done if the user has a fast DSL connection , today can be done by phone 4G networks . 

         One significant difference between 3G and 4G download speeds are offered.Download speeds over 3G networks are generally around 0.6 - 1.4 megabits per second , with a maximum speed of 3.1 megabits per second at a certain time . To turn the 4G network , it offers download speeds of 3-6 megabits per second , with a maximum speed of 10 megabits per second , 3 -5 times the maximum speed that can be achieved from the third generation network (3G ) . 

            Other differences can be taken into account is the difference between upload both the networkings . For example , for fed up videos or files from the computer to the website, 3G networks offer speeds of only 0.5 Megabytes to 1 megabits using 4G networks . Could be said 4G network can upload twice the speed of the 3G network . 

       Another example of the speed of its 4G network , if download television shows takes about 19 minutes on 3G network , but it takes less than 5 minutes if using 4G networks . In addition, make dinner reservations only takes half a second on the 4G network , 5 seconds if using the 3G network and many more other examples of this speed 4G technology .

         All this means is that 4G wireless internet will allow users to access the internet on their phones at the same speed if they do at home using DSL . Could be said , on the phone 4G technology increasingly approaching the speed if using a regular computer .Maybe in the future we will not need to depend on a computer to surf the Internet with fast , we just need a phone that is equipped with 4G technology. 

types	years	Cool New Features
1G	70's to 80's	mobile phone was introduced, especially for voice.
2G	90's to 2000	increase in performance by allowing users on one channel at a time. More and more mobile phones are used for voice and data transfer.
2.5G	2001-2004	Internet is changing to focus on data transmission. "Enhanced multimedia and" video streaming "into reality. Phones can browse the website, but limited.
3G	2004-2005	The ability to use the "Enhanced Multimedia" and "streaming video" is increasing. Standards are designed to allow universal access and portability between different devices (phone, PDA, etc.)
4G	2006+	Speeds reach up to 40Mbps. The ability to use the "Enhanced Multimedia" and "streaming video" is increasing. The device is equipped for "roaming" around the world.

Wi-Fi technology

Get to know Wi-Fi Technology

Wi-Fi is gaining popularity and becoming attached to a word on the lips of IT userstoday. But do you know what it is Wi-Fi? This time you can find out what it is Wi-Fi in a nutshell.

WHAT IS WI-Fl?

Wi-Fi is short for Wireless Fidelity, in which the term has been given officially by the

WECA (Wireless Ethernet Compatibility Alliance).

Wi-Fi was introduced by the wirelessproducts in late 1998. Use Wi-Fi refers to the network using the wireless linkbandwidth connection (broadband), point (access point) and a Wi-Fi card installed in the computer to allow users to share files and printers as well as browsing the Internetthe same as regular LAN network .

WiMAX

KNOWING ABOUT WiMaX

WiMAX stands for Worldwide Interoperability for Microwave is Access.

•  Based on the Wireless MAN technology. 
•  A wireless platform / wireless broadband network scalable to developingalternative and complementary.   

It has the ability to accommodate data transmission speed of 15 to 75 Mbps willmake it the preferred technology of the future. 

It will be challenging but not 3G orWiFi directly as they are developed to complement each other.
         
As WiFi is used to connect devices or computers in the home or office, WiMax will be used to connect the WiFi networks in a wide area. 

Meanwhile, 3G WiMax was a bridge across the country and the world.

Green Computing

What does Green Computing mean?

Green computing is the environmentally responsible and eco-friendly use of computers and their resources. in broader terms, it is also defined as the study of designing, manufacturing/engineering, using and disposing of computing devices in a way that reduces their environmental impact.

Many IT manufacturers and vendors are continously investing in designing energy efficient computing devices, reducing the use of dangerous maerials and encouraging the recyclability of digital devices and paper. green computing practices came into being in 1992, when the Environmental Protection Agency (EPA) launched the Energy Star program.

Green computing is also know as green information technology (green IT)

Techopedia explains Green Computing

Green computing, or green IT, aims to attain economic viability and improve the way computing devices are used. Green IT practices include the development of environmentally sustainable production practices, energy efficient computers and improved disposal and recycling procedures. 

To promote green computing concepts at all possible levels, the following four complementary approaches are employed:

• Green use: Minimizing the electricity consumption of computers and their peripheral devices and using them in an eco-friendly manner

• Green disposal: Re-making an existing computer or appropriately disposing of, or recycling, unwanted electronic equipment

• Green design: Designing energy-efficient computers, servers, printers, projectors and other digital devices

• Green manufacturing: Minimizing waste during the manufacturing of computers and other subsystems to reduce the environmental impact of these activities

• Government regulatory authorities also actively work to promote green computing concepts by introducing several voluntary programs and regulations for their enforcement.

Average computer users can employ the following general tactics to make their computing usage more green:

• Use the hibernate or sleep mode when away from a computer for extended periods

• Use flat-screen or LCD monitors, instead of conventional cathode ray tube (CRT) monitors

• Buy energy efficient notebook computers, instead of desktop computers

• Activate the power management features for controlling energy consumption

• Make proper arrangements for safe electronic waste disposal

• Turn off computers at the end of each day

• Refill printer cartridges, rather than buying new ones

• Instead of purchasing a new computer, try refurbishing an existing device

what is computer???

Computer is an electronic device that is designed to work with Information.The termcomputer is derived from the Latin term‘computare’, this means to calculate.Computer can not do anything without a Program.it represents the decimal numbers through a string of binary digits. The Word 'Computer'usually refers to the CenterProcessor Unit plus Internal memory.


Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use. It can process both numerical and non-numerical (arithmetic and logical) calculations.The basic components of a modern digital computer are: Input Device,Output Device,Central Processor. 


A Typical modern computer uses LSI Chips.Charles Babbage is called the "Grand Father" of the computer.The First mechanical computer designed by charles Babbage was called Analytical Engine. It uses read-only memory in the form of punch cards.