Here is a long and detailed note on USB (Universal Serial Bus) suitable for study or reference: USB (Universal Seri al Bus) - Detailed Notes 1. Introduction USB (Universal Serial Bus) is an industry standard that establishes specifications for cables, connectors, and protocols for connection, communication, and power supply between computers and electronic devices. 2. History and Evolution Developed by : A group of companies including Intel, Microsoft, IBM, and others. First introduced : In 1996. Purpose: To replace a variety of earlier interfaces like serial ports, parallel ports, and power chargers with a single standard. USB Versions Version Release Year Speed Features USB 1.0/1.1 1996/1998 1.5 Mbps (Low), 12 Mbps (Full) Basic devices USB 2.0 2000 480 Mbps (High Speed) Widely adopted USB 3.0 2008 5 Gbps (SuperSpeed) Faster data transfer USB 3.1 2013 10 Gbps (SuperSpeed+) Improved power delivery USB 3.2 2017 Up to 20 Gbps ...
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