PRESENTATION

ON

USB

USB stands for Universal Serial Bus

Provides an expandable, fast, bi-directional, low cost, hot pluggable Plug and Play serial hardware interface

Allows users to connect a wide variety of peripherals to a computer and have them automatically configured and ready to use

What is USB?

Developed and standardized by a group of leading companies from the computer and electronics industries in 1995

USB specifications were developed by Compaq, DEC, IBM, Intel , Microsoft, and NEC, joined later by HP, Lucent, and Phillips

History of USB

USB 1.0 in January 1996

USB 1.1 in September 1998

USB 2.0 in April 2000

Important note – all versions are backwards compatible with previous versions of USB

Types of USB

High performanceUSB offers data transfer speeds at up to 480

MbpsExpandability

Up to 127 different peripheral devices may theoretically be connected to a single bus at one time

Bus-supplied powerUSB distributes the power to all connected

devices, eliminating the need for an external power source for low power devices (flash drives, memory cards, Bluetooth)

Key Features

Upgrade from USB 2.0

New communication protocols for devices

New power management features

Longer maximum cable lengths

Similar to PCI Express 2.0 technology

USB 3.0

Mainly the need for faster transfer rates in devices such as hard drives, flash card readers, DVD and HD DVD optical drives

User applications demanding a higher performance connection between the PC and peripherals

Need for greater energy efficiency in today’s “greener

world”

Why the upgrade?

USB 2.0Cable is thinner

Has 4 primary conductors

Half duplex data transfer mode

Cable resembles an Ethernet cord by thickness

Has 8 primary conductors

Three twisted signal pairs for data paths and one power pair

Full duplex data transfer mode

USB 2.0 vs. USB 3.0 – Hardware

USB 3.0

A side note on the USB 3.0 cable:Even though the USB 3.0 specifications are

designed for backwards compatibility with USB 2.0, the USB 3.0 cables are not compatible with the regular USB 2.0 connector

USB 2.0 vs. USB 3.0

THANK YOU !

NAME: VIVEK PATEL

SUBJECT: COMMUNICATION SKILL FOR IT MANAGEMENT-2

ROLL NO: 58

CLASS: S.Y BBA(ITM) SEM-IV

COLLEGE: C.P PATEL & F.H SHAH COMMERCE COLLEGE.