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Bluetooth
How Bluetooth Works
When you use computers, entertainment systems or telephones, the various pieces and parts of the systems make up a community of electronic devices. These devices communicate with each other using a variety of wires, cables, radio signals and infrared light beams, and an even greater variety of connectors, plugs and protocols.
There are lots of different ways that electronic devices can connect to one another. For example:
- Component cables
- Electrical wires
- Ethernet cables
- WiFi
- Infrared signals
The art of connecting things is becoming more and more complex every day. In this article, we will look at a method of connecting devices, called Bluetooth, that can streamline the process. A Bluetooth connection is wireless and automatic, and it has a number of interesting features that can simplify our daily lives.
The Problem
When any two devices need to talk to each other, they have to agree on a number of points before the conversation can begin. The first point of agreement is physical: Will they talk over wires, or through some form of wireless signals? If they use wires, how many are required -- one, two, eight, 25? Once the physical attributes are decided, several more questions arise:
- How much data will be sent at a time? For instance, serial ports send data 1 bit at a time, while parallel ports send several bits at once.
- How will they speak to each other? All of the parties in an electronic discussion need to know what the bits mean and whether the message they receive is the same message that was sent. This means developing a set of commands and responses known as a protocol.
Bluetooth offers a solution to the problem.
File Sharing
Technically it is the process of sharing digitally stored information,programs, multimedias,docoments or books.It may be done over a network or across the internet via file sharing services.Usually over a network different levels of access privileges are given to different users.In a network the user who owns the file can set read and write priviliges to regulates who can modify their files.
Files were initially shared on removable media like CDs,pen drives and floppy disks.
Gradually easier methods for file sharing were adopted like mounting servers, bulletin boards systems.FTP servers etc. File sharing has also led to a lot of illegal exchanges and piracy is now rampant.Due to
efforts have been made to enforce stringent rules
on file sharing applications
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