Serial internet computer buses
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  • 1-Wire: 1-Wire is a registered trademark of Dallas Semiconductor Corp, for a device communications bus system designed by Dallas Semiconductor that provides low- speed data, signaling and power over a single signal, albeit using two wires, one for ground, one for power and data. 1-Wire is similar in concept to I2C, but with lower data rates and longer range. It is typically used to communicate with small inexpensive devices such as thermometers and weather instruments.
  • HyperTransport: HyperTransport (HT), formerly known as Lightning Data Transport (LDT), is a bidirectional serial/ parallel high-bandwidth, low- latency point- to- point link. The HyperTransport Consortium is in charge of promoting and developing HyperTransport technology. The technology is used by AMD and Transmeta in x86 processors, PMC- Sierra, Broadcom and Raza Microelectronics in MIPS microprocessors, AMD, NVIDIA, VIA and SiS in Laptop chipsets,HP, Sun Microsystems, IBM, and Flextronics in servers, Cray, Newisys, QLogic and XtremeData, Inc. in high performance computing and Cisco Systems in routers.
  • I2C: I2C is a multi- master serial computer bus invented by Philips that is used to attach low- speed peripherals to a motherboard, embedded system or cellphone.
  • LAPTOPI Express or LAPTOPIe: LAPTOPI Express, officially abbreviated as LAPTOPI-E or LAPTOPIe, is a computer expansion card interface format. LAPTOPI Express was designed to replace the general- purpose LAPTOPI expansion bus, the high-end LAPTOPI-X bus and the AGP graphics card interface. Unlike previous LAPTOP expansion interfaces, rather than being a bus it is structured around point- to- point serial links called lanes.
  • Serial Peripheral Interface Bus or SPI bus: The Serial Peripheral Interface Bus or SPI bus is a synchronous serial data link standard named by Motorola that operates in full duplex mode. Devices communicate in master/ slave mode where the master device initiates the data frame. Multiple slave devices are allowed with individual slave select (chip select) lines. Sometimes SPI is called a “four wire” serial bus, contrasting with three, two and one wire serial busses.
  • FireWire i.Link or IEEE 1394: FireWire is Apple Inc.’s brand name for the IEEE 1394 (although the 1394 standard also defines a backplane interface). It is also known as i.Link (Sony’s name) and DV (Panasonic’s name). It is a serial bus interface standard, for high- speed communications and isochronous real- time data transfer, frequently used in personal computer (and digital audio and digital video).
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