Wireless Technology and computers of the future. Insight same subtopic such as cloud computing and virtualization.

Wireless Technology

                What come's to your mind when you hear the word wireless technology?Wireless technology is the transfer of information between two or more points that are physically not connected.It has exploded   over recent years with the use of 3G phones and wireless home computing increasingly commonplace.

Wireless technology  greatly benefits computer users. Networking enables sharing, sending, and receiving information. Whether you are hooked up to a local area network (LAN) or a wide area network (WAN), hooked up to a intranet or the internet, networking is one of today’s most essential products of technology. Many companies, such as Bluetooth Technology, are expanding our networking capabilities to wireless. Wireless networking has its pros and cons.There are many devices using wireless technology now a days.These are the examples of wireless equipment use today.

examples of wireless equipment

• Cellular phones and pagers: provide connectivity for portable and mobile applications, both personal and business
• Global Positioning System (GPS): allows drivers of cars and trucks, captains of boats and ships, and pilots of aircraft to ascertain their location anywhere on earth
• Cordless computer peripherals: the cordless mouse is a common example; keyboards and printers can also be linked to a computer via wireless
• Cordless telephone sets: these are limited-range devices, not to be confused with cell phones
• Home-entertainment-system control boxes: the VCR control and the TV channel control are the most common examples; some hi-fi sound systems and FM broadcast receivers also use this technology
• Remote garage-door openers: one of the oldest wireless devices in common use by consumers; usually operates at radio frequencies
• Two-way radios: this includes Amateur and Citizens Radio Service, as well as business, marine, and military communications
• Baby monitors: these devices are simplified radio transmitter/receiver units with limited range
• Satellite television: allows viewers in almost any location to select from hundreds of channels
• Wireless LANs or local area networks: provide flexibility and reliability for business computer users
Wireless technology is rapidly evolving, and is playing an increasing role in the lives of people throughout the world. In addition, ever-larger numbers of people are relying on the technology directly or indirectly. (It has been suggested that wireless is overused in some situations, creating a social nuisance.) More specialized and exotic examples of wireless communications and control include:
• Global System for Mobile Communication (GSM): a digital mobile telephone system used in Europe and other parts of the world; the de facto wireless telephone standard in Europe
• General Packet Radio Service (GPRS): a packet-based wireless communication service that provides continuous connection to the Internet for mobile phone and computer users
• Enhanced Data GSM Environment (EDGE): a faster version of the Global System for Mobile (GSM) wireless service
• Universal Mobile Telecommunications System (UMTS): a broadband, packet-based system offering a consistent set of services to mobile computer and phone users no matter where they are located in the world
• Wireless Application Protocol (WAP): a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access
• i-Mode: the world's first "smart phone" for Web browsing, first introduced in Japan; provides color and video over telephone sets
• Wi-Fi technology is a two way radio communication: the wireless adapter translates data into a radio signal then transmits it via antenna and the signal is received and decoded by the wireless router that uses a tangible wired Ethernet connection to send information to the Internet. 
• CDMA is (Code Division Multiple Access) A method for transmitting multiple digital signals simultaneously over the same carrier frequency 
• HSDPA (High-Speed Downlink Packet Access) is a packet-based mobile telephony protocol used in 3G UMTS radio networks to increase data capacity and speed up transfer rates. 
• Bandwidths is a term use to describe how much data/information can be transmitted over a connection.

Wireless can be divided into:

• Fixed wireless: the operation of wireless devices or systems in homes and offices, and in particular, equipment connected to the Internet via specialized modems
• Mobile wireless: the use of wireless devices or systems aboard motorized, moving vehicles; examples include the automotive cell phone and PCS (personal communications services)
• Portable wireless: the operation of autonomous, battery-powered wireless devices or systems outside the office, home, or vehicle; examples include handheld cell phones and PCS units
• The use of devices that convey data via IR (infrared) radiation; employed in certain limited-range communications and control systems.

Why go wireless? because it is easy simplier and hassle free.Can't you imagine yourself sitting at the school with your laptop while surfing the net?

Computers of the Future

 Computer is a part of our nowadays. More and more we become dependent on computers. So far computers haven’t overcame peoples’ brains, but in the near future computers will be more intelligent than we could ever dreamed about it. Soon every step that we make will be followed by computers. The main thing is, how it will affect peoples lives, worldviews, and thinking. 

                                                                               

                                                                      

Virtualization    

Virtualization, in computing, is the creation of a virtual (rather than actual) version of something, such as a hardware platform, operating system, a storage device or network resources.

Virtualization can be viewed as part of an overall trend in enterprise IT that includes autonomic computing, a scenario in which the IT environment will be able to manage itself based on perceived activity, and utility computing, in which computer processing power is seen as a utility that clients can pay for only as needed. The usual goal of virtualization is to centralize administrative tasks while improving scalability and work loads.

                                    

Cloud Computing

         

Cloud computing is a general term for anything that involves delivering hosted services over the Internet. These services are broadly divided into three categories: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS). The name cloud computing was inspired by the cloud symbol that's often used to represent the Internet in flowcharts and diagrams.

Infrastructure-as-a-Service like Amazon Web Services provides virtual server instanceAPI) to start, stop, access and configure their virtual servers and storage. In the enterprise, cloud computing allows a company to pay for only as much capacity as is needed, and bring more online as soon as required. Because this pay-for-what-you-use model resembles the way electricity, fuel and water are consumed, it's sometimes referred to as utility computing.

Platform-as-a-service in the cloud is defined as a set of software and product development tools hosted on the provider's infrastructure. Developers create applications on the provider's platform over the Internet. PaaS providers may use APIs, website portals orgateway software installed on the customer's computer. Force.com, (an outgrowth of Salesforce.com) and GoogleApps are examples of PaaS. Developers need to know that currently, there are not standards for interoperability or data portability in the cloud. Some providers will not allow software created by their customers to be moved off the provider's platform.