USB (Universal Serial Bus)

• Modern standard for connecting peripherals to computers.
• Features plug-and-play capabilities and supports daisy-chaining devices.
• USB 2.0: Supports up to 480 Mbps.
• USB 3.0: Supports up to 4.8 Gbps.

Components:

1. Electrical Component:

   • Defines two wires: VBUS (Power) and Ground (5V signal).
   • D+ and D- wires handle data and signaling.

2. Mechanical Component:

   • Defines four different connector types using only four wires.

3. Functional & Procedural Components:

   • More complex; based on a polled bus system where the computer checks each peripheral to see if it has data to send.