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Computer Peripherals 02.pdf


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Communication Ports
INTRODUCTION

 There are two basic data transmission methods modern computes employ:

parallel data transmission and serial data transmission. In a serial data
transmission scheme one device sends data to another a single bit at a time
across one wire. In a parallel transmission scheme, one device sends data
to another several bits at a time (in parallel) on several different wires.

01010100100011111010101011001010101010101010
Serial transmission
Parallel port

0
1
1
0
1
1
0
1

Parallel transmission

2