By Clint Johnston

1. What is USB? Most common type of USB connection.

2. Who made USB?? Ajay Bhatt. This lovely fellow.

USB is intended to replace many varieties of serial and parallel ports. USB can connect computer peripherals such as mice, keyboards, digital cameras, printers, personal media players, flash drives, and external hard drives. For many of those devices, USB has become the standard connection method. USB was designed for personal computers, but it has become commonplace on other devices such as smartphones, PDAs and video game consoles, and as a power cord. As of 2008, there are about 2 billion USB devices sold per year, and approximately 6 billion total sold to date. What are some of the uses of USB?

Some History on USB. USB began development in 1994 by a group of seven companies: Compaq, DEC, IBM, Intel, Microsoft, NEC and Nortel. The USB 1.0 specification was introduced in January The original USB 1.0 specification had a data transfer rate of just 12 Mbit/s. The first widely used version of USB was 1.1, which was released in September had a transfer speed of 12 Mbit/s. The USB 2.0 specification was released in April 2000 and was standardized by the USB-IF at the end of USB has a higher data transfer rate, with the resulting specification achieving 480 Mbit/s, a fortyfold increase over 12 Mbit/s for the original USB 1.0.

A closer look at some of the peripherals that use USB USB Mass Storage Device

USB extension cord Range of different connection types male Micro B male Mini B (8-pin) male Mini B (5-pin) female standard A male standard A male standard B From left to right

Close up view of the 2 main types of USB connections. Standard type A The one on the Left. Standard type B The one on the Right.

Break Down of USB speeds

A Look into the Future That’s all folks.