Civil Rights
Movements, leaders, victories and the continuing fight for equality.
q2K BHP
Black History Portal
THE BHP WIRE —
HIDDEN TRUTHS
What's New!
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
In 1968 Shirley Chisholm became the first Black woman elected to the United States Congress. In 1972 she launched a campaign for the Democratic presidential nomination, breaking another political barrier.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
| Symbios Logic | |
|---|---|
 | |
| Founded | February 15, 1995 (as independent subsidiary)[1] |
| Defunct | August 1998 |
| Fate | Acquired by LSI Logic |
| Website | symbios.com at the Wayback Machine (archived 1997-01-24) |
Symbios Logic Inc. was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems.
It was originally established as the NCR Microelectronics division of NCR Corporation in 1972, before NCR's takeover by AT&T Corporation in 1991.
In 1995, AT&T sold off the division to Hyundai Electronics (later known as Hynix) which established the name Symbios Logic. In July 1998 Hyundai sold Symbios (then headquartered in Fort Collins, Colorado) to LSI Logic for $760 million cash.[2][3]
In November 2000, LSI acquired Syntax Systems, and in August 2001 the groups merged to become LSI Logic Storage Systems. In 2004 its name was changed to Engenio Information Technologies, Inc. The subsidiary filed for an initial public offering on February 19, 2004.[4] At the time, Engenio's chief executive was Thomas Georgens, and its headquarters were in Milpitas, California.[4] After a number of delays, the request was withdrawn in August 2004.[5]
On March 9, 2011, LSI announced its sale of its Engenio storage group to NetApp for $480 million in cash.[6] The sale of the Engenio division, which generated revenues of $705 million in 2010, completed in May.[7]
| Products and services | |
|---|---|
| Divisions | |
| People | |
| Other | |
 | This United States manufacturing company–related article is a stub. You can help Wikipedia by adding missing information. |
Source: Wikipedia. Article content is retrieved live through the MediaWiki API.
Symbios Logic Inc. was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems.
Parallel SCSI (formally, SCSI Parallel Interface, or SPI) is the earliest of the interface implementations in the SCSI family. SPI is a parallel bus; there is one set of electrical connections stretching from one end of the SCSI bus to the other. A SCSI device attaches to the bus but does not interrupt it. Both ends of the bus must be terminated. SCSI is a peer-to-peer peripheral interface. Every device attaches to the SCSI bus in a similar manner. Depending on the version, up to 8 or 16 devices can be attached to a single bus. There can be multiple hosts and multiple peripheral devices but there should be at least one host. The SCSI protocol defines communication from host to host, host to a peripheral device, and peripheral device to a peripheral device. The Symbios Logic 53C810 chip is an example of a PCI host interface that can act as a SCSI target. SCSI-1 and SCSI-2 have the option of parity bit error checking. Starting with SCSI-U160 (part of SCSI-3), all commands and data are error checked by a cyclic redundancy check.
LSI Logic Corporation was an American ASIC and EDA company founded in Santa Clara, California. The company designed and sold semiconductors and software that accelerated storage and networking in data centers, mobile networks and client computing. In April 2007, LSI Logic merged with Agere Systems and rebranded the firm as LSI Corporation.On May 6, 2014, LSI Corporation was acquired by Avago Technologies (now known as Broadcom Inc.) for $6.6 billion.
The NCR 315 Data Processing System, released in January 1962 by NCR, is a second-generation computer. All printed circuit boards use resistor–transistor logic (RTL) to create the various logic elements. The magnetic-core memory is divided into 12-bit addressable units called slabs. The instructions can use a memory slab as either two 6-bit alphanumeric characters or as three 4-bit BCD digits. Basic memory is 5000 slabs (10,000 characters or 15,000 decimal digits), which is expandable to a maximum of 40,000 slabs (80,000 characters or 120,000 decimal digits) in four refrigerator-size cabinets. The main processor includes three cabinets and a console section that houses the power supply, keyboard, output writer (an IBM electric typewriter), and a panel with lights that indicate the current status of the program counter, registers, arithmetic accumulator, and system errors. Input/Output is by direct parallel connections to each type of peripheral through a two-cable bundle with 1-inch-thick cables. Some devices like magnetic tape and the CRAM are daisy-chained to allow multiple drives to be connected. The central processor (315 Data Processor) weighed about 1,325 pounds (601 kg). Later models in this series include the 315-100 and the 315-RMC (Rod Memory Computer).
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Mae Jemison, aboard Space Shuttle Endeavour in 1992.
