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- 1. Routing in adhoc networks of mobile hosts SUBMITTED BY V.NAVEEN (09491A0442) Department of Electronics and Communication Engineering QIS COLLEGE OF ENGINEERING AND TECHNOLOGY .
- 2. Universal Serial Bus USB
- 3. Brief History of USB In 1994 development began on an idea to make it simpler to connect external devices to personal computers (PC). The idea was collaborated with seven companies: Compaq, DEC, IBM, Intel, Microsoft, NEC and Nortel. These seven companies together developed the first Universal Serial Bus (USB) specification. This specification allowed an increase in bandwidth for external devices and simplified software configurations of all devices.
- 4. History of USB 1.0 / 1.1 USB 1.0 was first introduced to the public in January 1996. It was the first iteration of the USB protocol and it operated at a rate of 12 Mbit/s. After 2 years USB 1.0 standard was revised to USB 1.1. This update introduced varied data rates and allowed higher speed devices to receive the full 12 Mbit/s while slower devices used a lower 1.5 Mbit/s rate.
- 5. History of USB 2.0 For roughly three years USB 1.0 was one of the few choices for connecting external devices to PCs. In the year 2000 a group of companies banded together to improve USB 1.1. Hewlett- Packard, Intel, Lucent Technologies, NEC and Philips which formed the USB Implementers’ Forum or USB-IF, worked together to bring a new standardization into light. The new USB was called USB 2.0 and with its new standard transfer rate of 480 Mbit/s, the speed increased 40 times over USB 1.1.
- 6. History of USB 3.0 USB 2.0 continued on for seven years when in 2008 the USB-IF released the latest iteration of the USB standard; USB 3.0. SuperSpeed or USB 3.0 has a nearly ten times increase in data rate over USB 2.0, 4.8Gbit/s versus 480Mbit/s. USB 3.0 is currently being implemented into some of the newest products offered today.
- 7. Current Devices using USB 1.1/2.0
- 8. Comparison USB 2.0 – USB 3.0 USB 3.0 is 10X Faster than USB 2.0 USB 3.0: 4.8Gbit/sec USB 2.0: 480Mbit/sec Full-duplex data transfers using Bi-directional data interface New Power Management features; Increased power to devices with decreased power consumption during idle periods Increased maximum bus power and device current draw with increased power control for maximum efficiency 100% Backwards Compatible with USB 2.0
- 9. Power Management for 3.0 Increased power to devices Decreased power consumption during idle periods Increased maximum bus power and device current draw with increased power control for maximum efficiency 50% more power is provided for unconfigured or suspended devices (150 mA up from 100 mA) 80% more power is available for configured devices (900 mA up from 500 mA).
- 10. Devices utilizing increased speeds of USB 3.0 External Blu-Ray Players External high capacity HDD Drives High Mega Pixel cameras High Definition Video capture devices Multi-channel Audio Interfaces High capacity Jump Drives (USB Storage Devices)
- 11. Qualtek’s USB 3.0 Nickel plated ground indents for superior connectivity with low cost Gold plated contacts for industry leading connectivity Aluminum-Foil / Mylar shield reduces cross-talk and interference Molded strain reliefs bend easily without sacrificing durability
- 13. Part Number Guide 3021001-03 USB Series Connector Series Length 3021 is USB 2.0 001 -03 = 3 Ft 3023 is USB 3.0 002 -03M = 3 Meters 003 004
Editor's Notes
- In 1994 development began on an idea to make it simpler to connect external devices to personal computers (PC). The idea was collaborated with seven companies: Compaq, DEC, IBM, Intel, Microsoft, NEC and Nortel. These seven companies together developed the first Universal Serial Bus (USB) specification. This specification allowed an increase in bandwidth for external devices and simplified software configurations of all devices.
- USB 1.0 was first introduced to the public in January 1996. It was the first iteration of the USB protocol and it operated at a rate of 12 Mbit/s. After 2 years USB 1.0 standard was revised to USB 1.1. This update introduced varied data rates and allowed higher speed devices to receive the full 12 Mbit/s while slower devices used a lower 1.5 Mbit/s rate.
- For roughly three years USB 1.0 was one of the few choices for connecting external devices to PCs. In the year 2000 a group of companies banded together to improve USB 1.1. Hewlett-Packard, Intel, Lucent Technologies, NEC and Philips which formed the USB Implementers’ Forum or USB-IF, worked together to bring a new standardization into light. The new USB was called USB 2.0 and with its new standard transfer rate of 480 Mbit/s, the speed increased 40 times over USB 1.1.
- USB 2.0 continued on for seven years when in 2008 the USB-IF released the latest iteration of the USB standard; USB 3.0. SuperSpeed or USB 3.0 has a nearly ten times increase in data rate over USB 2.0, 4.8Gbit/s versus 480Mbit/s. USB 3.0 is currently being implemented into some of the newest products offered today.
- Here are some examples of different devices that utilize the USB interface for transferring data and recharging certain devices. Digital cameras, computer mice, cell phones, speakers, web cameras, MP3 players, external hard drives, keyboards, digital camcorders, and jump drives are just some of the many uses for the USB interface.
- Just as the jump from USB 1.1 to 2.0 was significant, so has the change from 2.0 to 3.0. This comparison showcases the benefits of USB 3.0 versus 2.0. USB 3.0 is about ten times faster then USB 2.0; 4.8Gbit/s and 480Mbit/s respectively. USB 3.0 offers a different style of data transfers by using full-duplex transfers instead of USB 2.0’s half-duplex data transfers. The following slides will explain both full and half duplex. USB 3.0 offers new power management features to increase the power available to external devices and decrease the power levels of devices during idle periods. One of the greatest features of USB 3.0 is that it is 100% backwards compatible with USB 2.0.
- USB 3.0 standardization brought with it some great power management features. USB 3.0 is providing higher power allowances for today’s devices that are demanding an increase in power output. Power output has been increased for configured devices by nearly 80% compared to USB 2.0. This increase in power will allow for a wider range of USB powered devices such as large capacity high speed external hard drives, blu-ray players, and hd video cameras.
- Some examples of different devices that would best utilize the increased data transfer rates as well as the increased power availability are external Blu-Ray players, external high capacity HDD drives, high mega pixel cameras, high definition video capture devices, Multi-channel Audio Interfaces, and High capacity Jump Drives (USB Storage Devices). These are just some of the many devices that can use USB 3.0 to its maximum potential.
- Qualtek values bringing its customers high quality with exceptional pricing. All USB 3.0 cables are nickel plated for superior connectivity with low cost, and every contact is gold plated for industry leading connectivity. Every Qualtek USB product uses aluminum foil and Mylar shielding to reduce cross-talk and interference from sources. All of Qualtek’s cords are produced with molded strain reliefs that bend easily without sacrificing durability.
- Qualtek Electronics specification drawings provide the customer with the following information: The dimensions of the USB cable, the interior makeup of the cable, a wiring color diagram, and a specifications list. Customers can use these specification drawings to determine if this particular part will work for their application.
- This is a demonstration of our part number guide, which is used to better determine which part will best suit the customer’s needs. In this case, the part number displayed, 3021001-03 is a USB 2.0 cord that is three feet in length with male USB A and USB B connectors on opposite ends.