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Tartan, Inc.
Tartan Laboratories, Inc., later renamed Tartan, Inc., was an American software company founded in 1981 and based in Pittsburgh, Pennsylvania, that specialized in programming language compilers, especially for the language Ada. It was based on work initially done at Carnegie Mellon University and gradually shifted from a focus on research and contract work to being more product-oriented. It was sold to Texas Instruments in 1996. Part of it was later acquired by DDC-I in 1998. Company founding and initial history Tartan was founded 1981 by Carnegie Mellon University computer science professors and husband and wife William A. Wulf and Anita K. Jones, with the goal of specializing in optimizing compilers. He was chair, president, and CEO while she was vice president of engineering. The professors left the university as part of this action, but still kept a reference to it, as "Tartan" is the name associated with Carnegie Mellon's athletic teams and school newspaper. A third CMU pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Privately Held Company
A privately held company (or simply a private company) is a company whose Stock, shares and related rights or obligations are not offered for public subscription or publicly negotiated in their respective listed markets. Instead, the Private equity, company's stock is offered, owned, traded or exchanged privately, also known as "over-the-counter (finance), over-the-counter". Related terms are unlisted organisation, unquoted company and private equity. Private companies are often less well-known than their public company, publicly traded counterparts but still have major importance in the world's economy. For example, in 2008, the 441 list of largest private non-governmental companies by revenue, largest private companies in the United States accounted for $1.8 trillion in revenues and employed 6.2 million people, according to ''Forbes''. In general, all companies that are not owned by the government are classified as private enterprises. This definition encompasses both publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dick Thornburgh
Richard Lewis Thornburgh (July 16, 1932 – December 31, 2020) was an American lawyer, author, and politician who served as the 76th United States attorney general from 1988 to 1991 under presidents Ronald Reagan and George H. W. Bush. A Republican, he previously served as the 41st governor of Pennsylvania and as the U.S. attorney for the Western District of Pennsylvania. Early life and education Thornburgh was born in Pittsburgh, Pennsylvania, on July 16, 1932, the son of Alice (Sanborn) and Charles Garland Thornburgh, an engineer. Thornburgh attended Mercersburg Academy then Yale University from which he obtained an engineering degree in 1954. Subsequently, he received a law degree from the University of Pittsburgh School of Law in 1957, where he served as an editor of the ''Law Review''. Thornburgh was inducted into Omicron Delta Kappa at the University of Pittsburgh in 1973, and was later awarded the society's highest honor, the Laurel Crowned Circle Award, in 199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microcode
In processor design, microcode serves as an intermediary layer situated between the central processing unit (CPU) hardware and the programmer-visible instruction set architecture of a computer. It consists of a set of hardware-level instructions that implement the higher-level machine code instructions or control internal finite-state machine sequencing in many digital processing components. While microcode is utilized in Intel and AMD general-purpose CPUs in contemporary desktops and laptops, it functions only as a fallback path for scenarios that the faster hardwired control unit is unable to manage. Housed in special high-speed memory, microcode translates machine instructions, state machine data, or other input into sequences of detailed circuit-level operations. It separates the machine instructions from the underlying electronics, thereby enabling greater flexibility in designing and altering instructions. Moreover, it facilitates the construction of complex multi-step inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ANSI C
ANSI C, ISO C, and Standard C are successive standards for the C programming language published by the American National Standards Institute (ANSI) and ISO/IEC JTC 1/SC 22/WG 14 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). Historically, the names referred specifically to the original and best-supported version of the standard (known as C89 or C90). Software developers writing in C are encouraged to conform to the standards, as doing so helps portability between compilers. History and outlook The first standard for C was published by ANSI. Although this document was subsequently adopted by ISO/IEC and subsequent revisions published by ISO/IEC have been adopted by ANSI, "ANSI C" is still used to refer to the standard. While some software developers use the term ISO C, others are standards-body neutral and use Standard C. Informal specification: K&R C (''C78'') Informal specification in 1978 (Brian Kernig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guy L
Guy or GUY may refer to: Personal names * Guy (given name) * Guy (surname) * That Guy (...), the New Zealand street performer Leigh Hart Places * Guy, Alberta, a Canadian hamlet * Guy, Arkansas, US, a city * Guy, Indiana, US, an unincorporated community * Guy, Kentucky, US, an unincorporated community * Guy, Texas, US, an unincorporated community * Guy Street, Montreal, Canada Arts and entertainment Films * ''Guy'' (1996 film), an American film starring Vincent D'Onofrio * ''Guy'' (2018 film), a French film starring Alex Lutz Music * Guy (band), an American R&B group ** ''Guy'' (Guy album), 1988 * Guy (Jayda G album), 2023 * " G.U.Y.", a 2014 song by Lady Gaga from the album ''Artpop'' Transport * Guy (sailing), rope to control a spinnaker on a sailboat * Air Guyane Express, ICAO code GUY * Guy Motors, a former British bus and truck builder * ''Guy'' (ship, 1933), see Boats of the Mackenzie River watershed * ''Guy'' (ship, 1961), see Boats of the Mac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modula-2
Modula-2 is a structured, procedural programming language developed between 1977 and 1985/8 by Niklaus Wirth at ETH Zurich. It was created as the language for the operating system and application software of the Lilith personal workstation. It was later used for programming outside the context of the Lilith. Wirth viewed Modula-2 as a successor to his earlier programming languages Pascal and Modula. The main concepts are: # The module as a compiling unit for separate compiling # The coroutine as the basic building block for concurrent processes # Types and procedures that allow access to machine-specific data The language design was influenced by the Mesa language and the Xerox Alto, both from Xerox PARC, that Wirth saw during his 1976 sabbatical year there. Page 4. The computer magazine ''Byte'' devoted the August 1984 issue to the language and its surrounding environment. Wirth created the Oberon series of languages as the successor to Modula-2, while others (particularl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C (programming Language)
C (''pronounced'' '' – like the letter c'') is a general-purpose programming language. It was created in the 1970s by Dennis Ritchie and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted Central processing unit, CPUs. It has found lasting use in operating systems code (especially in Kernel (operating system), kernels), device drivers, and protocol stacks, but its use in application software has been decreasing. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems. A successor to the programming language B (programming language), B, C was originally developed at Bell Labs by Ritchie between 1972 and 1973 to construct utilities running on Unix. It was applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually gained popularity. It has become one of the most widely used programming langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DIANA (intermediate Language)
DIANA (Descriptive Intermediate Attributed Notation for Ada) is an intermediate language used to represent the semantics of an Ada program. History It was originally designed as an interface between the compiler front end (syntactic analysis) and middle end (semantic analysis) of the compiler on the one hand and the compiler back end (code generation and optimization) on the other. It is also used as an internal representation (IR) by other language tools. DIANA is also used by PL/SQL, which is based on Ada. DIANA is an abstract data type; its concrete implementations are defined using the IDL specification language. DIANA descends from TCOL and AIDA ''Aida'' (or ''Aïda'', ) is a tragic opera in four acts by Giuseppe Verdi to an Italian libretto by Antonio Ghislanzoni. Set in the Old Kingdom of Egypt, it was commissioned by Cairo's Khedivial Opera House and had its première there on 24 De ..., earlier representations of Ada programs. The Ada-0 subset of Ada at Kar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intel I960
Intel's i960 (or 80960) is a RISC-based microprocessor design that became popular during the early 1990s as an embedded system, embedded microcontroller. It became a best-selling CPU in that segment, along with the competing AMD 29000. In spite of its success, Intel stopped marketing the i960 in the late 1990s, as a result of a settlement with Digital Equipment Corporation, DEC whereby Intel received the rights to produce the StrongARM CPU. The processor continues to be used for a few military applications. Origin The i960 design was begun in response to the failure of Intel's Intel iAPX 432, iAPX 432 design of the early 1980s. The iAPX 432 was intended to directly support high-level languages that supported tagged architecture, tagged, memory protection, protected, garbage collection (computer science), garbage-collected memory—such as Ada (programming language), Ada and Lisp (programming language), Lisp—in hardware. Because of its instruction-set complexity, its multi- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorola 680x0
The Motorola 68000 series (also known as 680x0, m68000, m68k, or 68k) is a family of 32-bit complex instruction set computer (CISC) microprocessors. During the 1980s and early 1990s, they were popular in personal computers and workstations and were the primary competitors of Intel's x86 microprocessors. They were best known as the processors used in the early Apple Macintosh, the Sharp X68000, the Commodore Amiga, the Sinclair QL, the Atari ST and Falcon, the Atari Jaguar, the Sega Genesis (Mega Drive) and Sega CD, the Philips CD-i, the Capcom System I (Arcade), the AT&T UNIX PC, the Tandy Model 16/16B/6000, the Sun Microsystems Sun-1, Sun-2 and Sun-3, the NeXT Computer, NeXTcube, NeXTstation, and NeXTcube Turbo, early Silicon Graphics IRIS workstations, the Aesthedes, computers from MASSCOMP, the Texas Instruments TI-89/ TI-92 calculators, the Palm Pilot (all models running Palm OS 4.x or earlier), the Control Data Corporation CDCNET Device Interface, the VTech Precomputer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIL-STD-1750A
MIL-STD-1750A or 1750A is the formal definition of a 16-bit computer instruction set architecture (ISA), including both required and optional components, as described by the military standard document MIL-STD-1750A (1980). Since August 1996, it has been inactive for new designs. In addition to the core ISA, the definition defines optional instructions, such as a FPU and MMU. Importantly, the standard does not define the implementation details of a 1750A processor. Internals The 1750A supports 216 16-bit words of memory for the core standard. The standard defines an optional memory management unit that allows 220 16-bit words of memory using 512 page mapping registers (in the I/O space), defining separate instruction and data spaces, and keyed memory access control. Most instructions are 16 bits, although some have a 16-bit extension. The standard computer has 16 general purpose 16-bit registers (0 through 15). Registers 1 through 15 can be used as index registers. Registers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SunOS
SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems from 1982 until the mid-1990s. The ''SunOS'' name is usually only used to refer to versions 1.0 to 4.1.4, which were based on BSD, while versions 5.0 and later are based on UNIX System V Release 4 and are marketed under the brand name '' Solaris''. History SunOS 1 only supported the Sun-2 series systems, including Sun-1 systems upgraded with Sun-2 ( 68010) CPU boards. SunOS 2 supported Sun-2 and Sun-3 ( 68020) series systems. SunOS 4 supported Sun-2 (until release 4.0.3), Sun-3 (until 4.1.1), Sun386i (4.0, 4.0.1 and 4.0.2 only) and Sun-4 ( SPARC) architectures. Although SunOS 4 was intended to be the first release to fully support Sun's new SPARC processor, there was also a SunOS 3.2 release with preliminary support for Sun-4 systems. SunOS 4.1.2 introduced support for Sun's first sun4m-architecture multiprocessor machines (t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
