December 2011
Intermediate to advanced
485 pages
15h 47m
English
Content preview from OS X and iOS Kernel Programming
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C H A P T E R 8
Universal Serial Bus
The Universal Serial Bus (USB) is a ubiquitous technology found in a wide variety of products, notably computer peripherals, including mice, keyboards, hard drives, and printers, as well as almost any other type of device or equipment that can be connected to a computer. The USB is a specification that defines the communication between a device, such as a printer or mobile phone, and a host controlled by a computer device, such as your Mac or iPad. The USB specification was developed in 1996 by a consortium of companies, including Compaq, DEC, IBM, Intel, Microsoft, NEC, and Nortel. The motivation was to replace a series of connectors with a universal connector, making it easier to connect external devices ...