Bluetooth Lecture

1. Prof. Neeraj Bhargava
Pramod Singh Rathore
Department of Computer Science
School of Engineering & System Sciences,
MDS, University Ajmer, Rajasthan, India
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3.  Transmitted simultaneously on separate wires.
 Multiple circuits for connection.
 Devices close to each other.
 E.g. Data transmission between computer and printer.

5.  Transmitted serially on same wire
 Requires 1 wire connect.
 Close or far doesn’t create any problem.
 E.g. Data transmission between compute and computer.

7.  in data communication , Timing control of the
reception of bits is important. There are two
methods of timing control for reception of
bits.
◦ Asynchronously data transmission.
◦ Synchronous data transmission.

8.  Data bytes transmitted any instance of time.
 One byte at a time.
 Ideal time between two bytes.
 Different clock frequencies.
 ‘start’ and ‘stop’ bits are used.
 Ideal time is not constant , also known as gaps.
 Timing is signal is not important.
 It is also known as connectionless data transmission.

10.  Advantages of Asynchronous transmission:
◦ Synchronization not necessary.
◦ Cheap scheme.
 Disadvantages of Asynchronous transmission:
◦ ‘start’ and ‘stop’ bits and gaps makes transmission slow.
◦ Timing error.

11.  Carried out under common master clock.
 Transmitted as block of bits.
 Operate at same clock frequencies.
 No ‘start’ and ‘stop’ bits required.
 No gaps between data bytes.
 Timing of signal is important.
 It is also known as connection oriented data
transmission.

13.  Advantages of Synchronous transmission:
◦ Speed of data Is much.
◦ Timing errors are required.
 Disadvantages of Synchronous transmission:
◦ Data entirely dependent on timing.
◦ Devices should be properly synchronized.

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