Ubiquitous computing

*:* Ubiquitous computing*:*

                 Ubiquitous computing is a vision, conceived about two decades ago. This is the 21st century. Now we can see Computer industry improvement. There are Computers everywhere. So we can do everything by using a one computer.  So let's see what is the Ubiquitous computing.

Ubiquitous computing is a paradigm in which the processing of information is linked with each activity or object as encountered. It involves connecting electronic devices, including embedding microprocessors to communicate information. Devices that use ubiquitous computing have constant availability and are completely connected. Ubiquitous computing is held by some to be the Third Wave of computing. The First Wave was many people per computer, the Second Wave was one person per computer. The Third Wave will be many computers per person.  Ubiquitous computing is roughly the opposite of virtual reality. The concept of Ubiquitous computing enables a real-time global sensing, context-aware information retrieval, multi-modal interaction with the user and enhanced visualization capabilities.

These are the some of Key features of ubiquitous computing.

• Consideration of the human factor and placing of the paradigm in a human, rather than computing, environment.
• Use of inexpensive processors, thereby reducing memory and storage requirements
• Capturing of real-time attributes.
• Totally connected and constantly available computing devices.
• Focus on many-to-many relationships, instead of one-to-one or one-to-many in the environment, along with the idea of technology, which is constantly present.
• Includes local/global, social/personal, public/privet and invisible/visible features and considers knowledge creation, as well as information dissemination.
• Relies on converging internet, wireless technology and advanced electronics.
• Increased surveillance and possible restriction and interference in user privacies, as the digital devices are wearable and constantly connected.
• As technology progresses, the reliability factor of the different equipment used may be impacted.