Jim Keller (engineer)
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Jim Keller (engineer)
James B. Keller (born 1958/1959) is an American microprocessor engineer best known for his work at AMD, Apple, and Tesla. He was the lead architect of the AMD K8 microarchitecture (including the original Athlon 64) and was involved in designing the Athlon (K7) and Apple A4/ A5 processors. He was also the coauthor of the specifications for the x86-64 instruction set and HyperTransport interconnect. From 2012 to 2015 he returned to AMD to work on the AMD K12 and Zen microarchitectures. Education He graduated from Pennsylvania State University in 1980 with a B.S. in electrical engineering. Career Jim Keller joined DEC in 1982 and worked there until 1998, where he was involved in designing a number of processors, including the VAX 8800, the Alpha 21164 and the Alpha 21264 processors. Prior to DEC, he had worked at Harris Corporation on microprocessor boards. In 1998, he moved to AMD, where he worked to launch the AMD Athlon (K7) processor and was the lead architect of ...
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Chief Executive Officer
A chief executive officer (CEO), also known as a chief executive or managing director, is the top-ranking corporate officer charged with the management of an organization, usually a company or a nonprofit organization. CEOs find roles in various organizations, including public and private corporations, Nonprofit organization, nonprofit organizations, and even some government organizations (notably state-owned enterprises). The governor and CEO of a corporation or company typically reports to the board of directors and is charged with maximizing the value of the business, which may include maximizing the profitability, market share, revenue, or another financial metric. In the nonprofit and government sector, CEOs typically aim at achieving outcomes related to the organization's mission, usually provided by legislation. CEOs are also frequently assigned the role of the main manager of the organization and the highest-ranking officer in the C-suite. Origins The term "chief executi ...
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The Verge
''The Verge'' is an American Technology journalism, technology news website headquarters, headquartered in Lower Manhattan, New York City and operated by Vox Media. The website publishes news, feature stories, guidebooks, product reviews, consumer electronics news, and podcasts. The website was launched on November 1, 2011, and uses Vox Media's proprietary multimedia publishing platform Chorus. In 2014, Nilay Patel was named editor-in-chief and Dieter Bohn executive editor; Helen Havlak was named editorial director in 2017. ''The Verge'' won five Webby Awards for the year 2012 including awards for Best Writing (Editorial), Best Podcast for ''The Vergecast'', Best Visual Design, Best Consumer Electronics Site, and Best Mobile News App. History Origins Between March and April 2011, up to nine of ''Engadget''s writers, editors, and product developers, including editor-in-chief Joshua Topolsky, left AOL, the company behind that website, to start a new gadget site. The other ...
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MIPS Architecture
MIPS (Microprocessor without Interlocked Pipelined Stages) is a family of reduced instruction set computer (RISC) instruction set architectures (ISA)Price, Charles (September 1995). ''MIPS IV Instruction Set'' (Revision 3.2), MIPS Technologies, Inc. developed by MIPS Computer Systems, now MIPS Technologies, based in the United States. There are multiple versions of MIPS, including MIPS I, II, III, IV, and V, as well as five releases of MIPS32/64 (for 32- and 64-bit implementations, respectively). The early MIPS architectures were 32-bit; 64-bit versions were developed later. As of April 2017, the current version of MIPS is MIPS32/64 Release 6. MIPS32/64 primarily differs from MIPS I–V by defining the privileged kernel mode System Control Coprocessor in addition to the user mode architecture. The MIPS architecture has several optional extensions: MIPS-3D, a simple set of floating-point SIMD instructions dedicated to 3D computer graphics; MDMX (MaDMaX), a more extensive i ...
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Multiprocessing
Multiprocessing (MP) is the use of two or more central processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor or the ability to allocate tasks between them. There are many variations on this basic theme, and the definition of multiprocessing can vary with context, mostly as a function of how CPUs are defined ( multiple cores on one die, multiple dies in one package, multiple packages in one system unit, etc.). A multiprocessor is a computer system having two or more processing units (multiple processors) each sharing main memory and peripherals, in order to simultaneously process programs. A 2009 textbook defined multiprocessor system similarly, but noted that the processors may share "some or all of the system’s memory and I/O facilities"; it also gave tightly coupled system as a synonymous term. At the operating system level, ''multiprocessing'' is sometimes used to refer to the executi ...
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Harris Corporation
Harris Corporation was an American technology company, defense contractor, and information technology service (economics), services provider that produced wireless equipment, tactical radios, electronic systems, night vision device, night vision equipment and both terrestrial and spaceborne antenna (radio), antennas for use in the government, defense, emergency service, and commercial sectors. They specialized in surveillance solutions, microwave weaponry, and electronic warfare. In 2019, it merged with L3 Technologies to form L3Harris Technologies. Headquartered in Melbourne, Florida, the company had approximately $7 billion of annual revenue. It was the largest private-sector employer in Brevard County, Florida (approximately 6,000). From 1988 to 1999, the company was the parent of Intersil, under the name Harris Semiconductor. In 2016, Harris was named one of the top hundred federal contractors by ''Defense News''. In January 2015, Wired Magazine, ''Wired'' Magazine ranked ...
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Alpha 21264
The Alpha 21264, also known by its code name, EV6, is a RISC microprocessor developed by Digital Equipment Corporation launched on 19 October 1998. The 21264 implemented the Alpha instruction set architecture (ISA). Description The Alpha 21264 is a four-issue superscalar microprocessor with out-of-order execution and speculative execution. It has a peak execution rate of six instructions per cycle and could sustain four instructions per cycle. It has a seven-stage instruction pipeline. Out of order execution At any given stage, the microprocessor could have up to 80 instructions in various stages of execution, surpassing any other contemporary microprocessor. Decoded instructions are held in instruction queues and are issued when their operands are available. The integer queue contained 20 entries and the floating-point queue 15. Each queue could issue as many instructions as there were pipelines. Ebox The Ebox executes integer, load and store instructions. It has tw ...
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Alpha 21164
The Alpha 21164, also known by its code name, EV5, is a microprocessor developed and fabricated by Digital Equipment Corporation that implemented the Alpha instruction set architecture (ISA). It was introduced in January 1995, succeeding the Alpha 21064A as Digital's flagship microprocessor. It was succeeded by the Alpha 21264 in 1998. History First silicon of the Alpha 21164 was produced in February 1994, and the OpenVMS, Digital UNIX and Windows NT operating systems were successfully booted on it. It was sampled in late 1994 and was introduced in January 1995 at 266 MHz. A 300 MHz version was introduced in March 1995. The final Alpha 21164, a 333 MHz version, was announced on 2 October 1995, available in sample quantities. The Alpha 21164 was replaced by the Alpha 21164A as Digital's flagship microprocessor in 1996 when a 400 MHz version became available in volume quantities. Users Digital used the Alpha 21164 operating at various clock frequencies in the ...
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VAX 8000
The VAX 8000 is a discontinued family of superminicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA). The 8000 series was introduced in October 1984 with the 8600, taking over the high end of the VAX lineup. Originally known as the 11/790, it offers performance roughly four times that of the earlier 11/780. It was succeeded by the 8650 (formerly the 11/795) in December 1985. January 1986 saw the introduction of the 8200 and 8300 families in the mid-range. The 8800 replaced the 8600s at the high end in 1987, with the 8700 and 8500 being lower-performance versions of these systems. DEC also offered various clusters of these machines with a variety of model numbers. As with other VAX systems, they were sold with either the VMS or Ultrix operating systems. It was intended that the 8800 was to have been replaced by the VAX 9000 on the high end, but this project failed. Instead, the VAX ...
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Digital Equipment Corporation
Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until he was forced to resign in 1992, after the company had gone into precipitous decline. The company produced many different product lines over its history. It is best known for the work in the minicomputer market starting in the early 1960s. The company produced a series of machines known as the Programmed Data Processor, PDP line, with the PDP-8 and PDP-11 being among the most successful minis in history. Their success was only surpassed by another DEC product, the late-1970s VAX "supermini" systems that were designed to replace the PDP-11. Although a number of competitors had successfully competed with Digital through the 1970s, the VAX cemented the company's place as a leading vendor in the computer space. As microcomputers improved in t ...
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Bachelor Of Science
A Bachelor of Science (BS, BSc, B.S., B.Sc., SB, or ScB; from the Latin ') is a bachelor's degree that is awarded for programs that generally last three to five years. The first university to admit a student to the degree of Bachelor of Science was the University of London in 1860. In the United States, the Lawrence Scientific School first conferred the degree in 1851, followed by the University of Michigan in 1855. Nathaniel Shaler, who was Harvard's Dean of Sciences, wrote in a private letter that "the degree of Bachelor of Science came to be introduced into our system through the influence of Louis Agassiz, who had much to do in shaping the plans of this School." Whether Bachelor of Science or Bachelor of Arts degrees are awarded in particular subjects varies between universities. For example, an economics student may graduate as a Bachelor of Arts in one university but as a Bachelor of Science in another, and occasionally, both options are offered. Some universities follo ...
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SemiAccurate
''SemiAccurate'' (S, A in short) is a U.S.-based Technology journalism, technology-news and -opinion web site, founded in 2009 by Charlie Demerjian (journalist), Charlie Demerjian after his departure from ''The Inquirer''. The site lists as its contributors: Charlie Demerjian (the site's founder), Thomas Ryan and Leo Yim. the site operates under a partial paywall model, making the majority of its content publicly available at no cost to readers - but subscribers to the "Student-" and "Professional-"level tiers receive access to special analysis articles and reports on industry trends similar to white papers. Notable stories In February 2010, SemiAccurate ran a story on the yet to be released, "GeForce 400 series, Fermi", microprocessor from Nvidia, which called the chip, "Hot, Slow, Late and Unmanufacturable." In August 2010, a tip off from a reader helped SemiAccurate to cover Sony admitting to defective graphics chips in some of its laptops. News organization International ...
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