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ARC Processor
Argonaut RISC Core (ARC) is a family of 32-bit and 64-bit reduced instruction set computer (RISC) central processing units (CPUs) originally designed by ARC International. ARC processors are configurable and extensible for a wide range of uses in system on a chip (SoC) devices, including storage, digital home, mobile, automotive, and Internet of things (IoT) applications. They have been licensed by more than 200 organizations and are shipped in more than 1.5 billion products per year. ARC processors employ the 16-/32-bit ARCompact compressed instruction set instruction set architecture (ISA) that provides good performance and code density for embedded and host SoC applications. History The ARC concept was developed initially within Argonaut Games through a series of 3D pipeline development projects starting with the Super FX chip for the Super Nintendo Entertainment System. In 1995, Argonaut was split into Argonaut Technologies Limited (ATL), which had a variety of technol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
32-bit Computing
In computer architecture, 32-bit computing refers to computer systems with a processor, memory, and other major system components that operate on data in a maximum of 32- bit units. Compared to smaller bit widths, 32-bit computers can perform large calculations more efficiently and process more data per clock cycle. Typical 32-bit personal computers also have a 32-bit address bus, permitting up to 4 GiB of RAM to be accessed, far more than previous generations of system architecture allowed. 32-bit designs have been used since the earliest days of electronic computing, in experimental systems and then in large mainframe and minicomputer systems. The first hybrid 16/32-bit microprocessor, the Motorola 68000, was introduced in the late 1970s and used in systems such as the original Apple Macintosh. Fully 32-bit microprocessors such as the HP FOCUS, Motorola 68020 and Intel 80386 were launched in the early to mid 1980s and became dominant by the early 1990s. This generat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Stock Exchange
The London Stock Exchange (LSE) is a stock exchange based in London, England. the total market value of all companies trading on the LSE stood at US$3.42 trillion. Its current premises are situated in Paternoster Square close to St Paul's Cathedral. Since 2007, it has been part of the London Stock Exchange Group (LSEG, which the exchange also lists (ticker symbol LSEG)). Despite a post-Brexit exodus of stock listings from the LSE, it was the most valued stock exchange in Europe as of 2023. According to the 2020 Office for National Statistics report, approximately 12% of UK-resident individuals reported having investments in stocks and shares. According to a 2020 Financial Conduct Authority report, approximately 15% of British adults reported having investments in stocks and shares. History Coffee House The Royal Exchange, London, Royal Exchange had been founded by the English financier Thomas Gresham and Sir Richard Clough on the model of the The Belgian bourse of Antwerp, An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FPGA
A field-programmable gate array (FPGA) is a type of configurable integrated circuit that can be repeatedly programmed after manufacturing. FPGAs are a subset of logic devices referred to as programmable logic devices (PLDs). They consist of an array of programmable logic device, programmable logic block, logic blocks with a connecting grid, that can be configured "in the field" to interconnect with other logic blocks to perform various digital functions. FPGAs are often used in limited (low) quantity production of custom-made products, and in research and development, where the higher cost of individual FPGAs is not as important, and where creating and manufacturing a custom circuit would not be feasible. Other applications for FPGAs include the telecommunications, automotive, aerospace, and industrial sectors, which benefit from their flexibility, high signal processing speed, and parallel processing abilities. A FPGA configuration is generally written using a hardware descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viterbi Algorithm
The Viterbi algorithm is a dynamic programming algorithm for obtaining the maximum a posteriori probability estimate of the most likely sequence of hidden states—called the Viterbi path—that results in a sequence of observed events. This is done especially in the context of Markov information sources and hidden Markov models (HMM). The algorithm has found universal application in decoding the convolutional codes used in both CDMA and GSM digital cellular, dial-up modems, satellite, deep-space communications, and 802.11 wireless LANs. It is now also commonly used in speech recognition, speech synthesis, diarization, keyword spotting, computational linguistics, and bioinformatics. For example, in speech-to-text (speech recognition), the acoustic signal is treated as the observed sequence of events, and a string of text is considered to be the "hidden cause" of the acoustic signal. The Viterbi algorithm finds the most likely string of text given the acoustic signal. His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memory Management Unit
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit that examines all references to computer memory, memory, and translates the memory addresses being referenced, known as virtual memory addresses, into physical addresses in main memory. In modern systems, programs generally have addresses that access the theoretical maximum memory of the computer architecture, 32 or 64 bits. The MMU maps the addresses from each program into separate areas in physical memory, which is generally much smaller than the theoretical maximum. This is possible because programs rarely use large amounts of memory at any one time. Most modern operating systems (OS) work in concert with an MMU to provide virtual memory (VM) support. The MMU tracks memory use in fixed-size blocks known as ''pages''. If a program refers to a location in a page that is not in physical memory, the MMU sends an interrupt to the operating system. The OS selects a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Efficiency (physics)
Energy conversion efficiency (''η'') is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical, electric power, mechanical work, light (radiation), or heat. The resulting value, ''η'' (eta), ranges between 0 and 1. Overview Energy conversion efficiency depends on the usefulness of the output. All or part of the heat produced from burning a fuel may become rejected waste heat if, for example, work is the desired output from a thermodynamic cycle. Energy converter is an example of an energy transformation. For example, a light bulb falls into the categories energy converter. \eta = \frac Even though the definition includes the notion of usefulness, efficiency is considered a technical or physical term. Goal or mission oriented terms include effectiveness and efficacy. Generally, energy conversion efficiency is a dimensionless number between 0 and 1.0, or 0% to 100%. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardware Register
In digital electronics, especially computing, hardware registers are circuits typically composed of flip-flops, often with many characteristics similar to memory, such as: * Using an memory or port address to select a particular register in a manner similar to a memory address. * the ability to read or write one or multiple bits at a time. Their distinguishing characteristic, however, is that they also have special hardware-related functions beyond those of ordinary memory. So, depending on the point of view, hardware registers are like memory with additional hardware-related functions; or, memory circuits are like hardware registers that just store data. Hardware registers are used in the interface between software and peripherals. Software writes them to send information to the device, and reads them to get information from the device. Some hardware devices also include registers that are not visible to software, for their internal use. Depending on their complexity, moder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embedded System
An embedded system is a specialized computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is embedded as part of a complete device often including electrical or electronic hardware and mechanical parts. Because an embedded system typically controls physical operations of the machine that it is embedded within, it often has real-time computing constraints. Embedded systems control many devices in common use. , it was estimated that ninety-eight percent of all microprocessors manufactured were used in embedded systems. Modern embedded systems are often based on microcontrollers (i.e. microprocessors with integrated memory and peripheral interfaces), but ordinary microprocessors (using external chips for memory and peripheral interface circuits) are also common, especially in more complex systems. In either case, the processor(s) us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RISC-V
RISC-V (pronounced "risk-five") is an open standard instruction set architecture (ISA) based on established reduced instruction set computer (RISC) principles. The project commenced in 2010 at the University of California, Berkeley. It transferred to the RISC-V Foundation in 2015, and from there to RISC-V International, a Swiss non-profit entity, in November 2019. Similar to several other RISC ISAs, e.g. Amber (processor), Amber (ARMv2)(2001), SuperH#J_Core, J-Core(2015), OpenRISC(2000), or OpenSPARC(2005), RISC-V is offered under royalty-free open-source licenses. The documents defining the RISC-V instruction set architecture (ISA) are offered under a Creative Commons license or a BSD licenses, BSD License. Mainline support for RISC-V was added to the Linux 5.17 kernel in 2022, along with its toolchain. In July 2023, RISC-V, in its 64-bit computing, 64-bit variant called riscv64, was included as an official architecture of Linux distribution Debian, in its Debian version histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virage Logic
Virage Logic corporation was an American provider of both functional and physical semiconductor intellectual property (IP) for the design of complex integrated circuits. It was founded in 1996. The company's differentiated product portfolio included processor centric solutions, interface IP solutions, embedded SRAMs and NVMs, embedded memory test and repair, logic libraries, and memory development software. History * 1996 Company founded. * 1999 India and Armenia R&D operations established. * 2000 Company's initial public offering. * 2001 STAR Memory System introduced. * 2002 Acquisition of InChip, semiconductor logic IP company. * 2007 Acquisition of Ingot Systems, ASIP company. * 2008 Acquisition of Impinj's logic non-volatile memory IP. * 2009 Acquisition of ARC International, configurable processors and multimedia IP company. * 2009 Acquisition of NXP CMOS IP Group. * 2010 Acquired by Synopsys Synopsys, Inc. is an American electronic design automation (EDA) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepean, Ontario
Nepean ( ) is an area of Ottawa, Ontario, Canada. Located west of Ottawa's inner core, it was an independent city until amalgamated with the Regional Municipality of Ottawa–Carleton in 2001 to become the new city of Ottawa. However, the name Nepean continues in common usage in reference to the area. The population of Nepean is about 186,593 people (2021 Census). Nepean's policies of operational and capital budgeting prudence contrasted with the budget philosophies of some other municipalities in the area. Nepean instituted a strict 'pay-as-you-go' budgeting scheme. The city entered amalgamation with a large surplus and a record of tax restraint. However, most big-ticket municipal infrastructure items (transit, garbage collection, sanitary sewers, water, arterial roads, social services) were the responsibility of the Regional Municipality of Ottawa-Carleton. It maintained its own library system from 1954 to amalgamation, its own police force from 1964 until it was regionalized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
