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LECTURE
Introduction
Q: the generating device to the next device?
– Physical layer of the OSI model
ta Transmission Do we send one bit to larger groups and if so, How?
o Bin By grouping we can send data ‘n’ bits at a time instead of one bit
l rather than ‘n’ to transmit data between two devices
How do we relay encoded data from A: Interface
– Defined by several popular standards
– Mechanical/electrical/functional specifications
Digital Da at a time or do we group bits in
Parallel Transmission ary data consisting of 1s and 0s may be organized into groups of ‘n’ bits each o
Serial Transmission o One bit follows another, so we need only one channe
o Conversion devices are required at the interface
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Advantage
Types o There
f Serial Transmission are two types of Serial Transmission:
Asynchronous Transmission
o It is so nam signal is unimportant. Instead information is received an tterns Start and Stop Bits
Disadvant
ission
Data is trans s an unbroken string of 1’s and 0’s and the receiver separates that string into the bytes or characters it need to reconstruct the information
- Asychronous Transmission
- Synchronous Transmission
ed d translated by agreed upon pa
because the timing of the
o
Asynchronous Transmission
Advantages
a ges
Synchronous Transm
mitted a
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