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Standard Cell
In semiconductor design, standard-cell methodology is a method of designing application-specific integrated circuits (ASICs) with mostly digital-logic features. Standard-cell methodology is an example of design abstraction, whereby a low-level very-large-scale integration ( VLSI) layout is encapsulated into an abstract logic representation (such as a NAND gate). Cell-based methodology – the general class to which standard cells belong – makes it possible for one designer to focus on the high-level (logical function) aspect of digital design, while another designer focuses on the implementation (physical) aspect. Along with semiconductor manufacturing advances, standard-cell methodology has helped designers scale ASICs from comparatively simple single-function ICs (of several thousand gates), to complex multi-million gate system-on-a-chip (SoC) devices. Construction of a standard cell A standard cell is a group of transistor and interconnect structures that provides a bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Chip 3d
Silicon is a chemical element; it has Symbol (chemistry), symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a Tetravalence, tetravalent metalloid (sometimes considered a non-metal) and semiconductor. It is a member of carbon group, group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Silicon is a significant element that is essential for several physiological and metabolic processes in plants. Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and effective anti-reflection coating. Because of its high chemical affinity for oxygen, it was not until 1823 that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netlist
In electronic design, a netlist is a description of the connectivity of an electronic circuit. In its simplest form, a netlist consists of a list of the electronic components in a circuit and a list of the nodes they are connected to. A network (net) is a collection of two or more interconnected components. The structure, complexity and representation of netlists can vary considerably, but the fundamental purpose of every netlist is to convey connectivity information. Netlists usually provide nothing more than instances, nodes, and perhaps some attributes of the components involved. If they express much more than this, they are usually considered to be a hardware description language such as Verilog or VHDL, or one of several languages specifically designed for input to simulators or hardware compilers (such as SPICE analog simulation netlists). Types of netlists Netlists can be: * Physical (based upon physical connections) or logical (based upon logical connections) ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logic Function
In mathematics and mathematical logic, Boolean algebra is a branch of algebra. It differs from elementary algebra in two ways. First, the values of the variables are the truth values ''true'' and ''false'', usually denoted by 1 and 0, whereas in elementary algebra the values of the variables are numbers. Second, Boolean algebra uses logical operators such as conjunction (''and'') denoted as , disjunction (''or'') denoted as , and negation (''not'') denoted as . Elementary algebra, on the other hand, uses arithmetic operators such as addition, multiplication, subtraction, and division. Boolean algebra is therefore a formal way of describing logical operations in the same way that elementary algebra describes numerical operations. Boolean algebra was introduced by George Boole in his first book ''The Mathematical Analysis of Logic'' (1847), and set forth more fully in his '' An Investigation of the Laws of Thought'' (1854). According to Huntington, the term ''Boolean algebra'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Circuit Layout
In integrated circuit design, integrated circuit (IC) layout, also known IC mask layout or mask design, is the representation of an integrated circuit in terms of planar geometric shapes which correspond to the patterns of metal, oxide, or semiconductor layers that make up the components of the integrated circuit. Originally the overall process was called tapeout, as historically early ICs used graphical black crepe tape on mylar media for photo imaging (erroneously believed to reference magnetic data—the photo process greatly predated magnetic media). When using a standard process—where the interaction of the many chemical, thermal, and photographic variables is known and carefully controlled—the behaviour of the final integrated circuit depends largely on the positions and interconnections of the geometric shapes. Using a computer-aided layout tool, the layout engineer—or layout technician—places and connects all of the components that make up the chip such that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very Large Scale Integration
Very may refer to: * English's prevailing intensifier Businesses * The Very Group The Very Group Limited is a multi-brand online retailer and financial services provider in the United Kingdom and Ireland. Its head offices are based in the Speke area of the city of Liverpool, England. The brand was established in November 2005 ..., a British retail/consumer finance corporation ** Very (online retailer), their main e-commerce brand * VERY TV, a Thai television channel Places * Véry, a commune in Meuse department, France * Very (lunar crater), on the Moon * Very (Martian crater), on Mars Music * ''Very'' (Pet Shop Boys album), 1993 * ''Very'' (Dreamscape album), 1999 * ''Very'', an album by Miki Furukawa, 2010 People * Edward Wilson Very (1847–1910), US Navy officer, inventor of the Very flare gun * Frank Washington Very (1852–1927), American astronomer * Jones Very (1813–1880), American poet, essayist, clergyman and mystic * Lydia Louisa Anna Very ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verilog
Verilog, standardized as IEEE 1364, is a hardware description language (HDL) used to model electronic systems. It is most commonly used in the design and verification of digital circuits, with the highest level of abstraction being at the register-transfer level. It is also used in the verification of analog circuits and mixed-signal circuits, as well as in the design of genetic circuits. In 2009, the Verilog standard (IEEE 1364-2005) was merged into the SystemVerilog standard, creating IEEE Standard 1800-2009. Since then, Verilog has been officially part of the SystemVerilog language. The current version is IEEE standard 1800-2023. Overview Hardware description languages such as Verilog are similar to software programming languages because they include ways of describing the propagation time and signal strengths (sensitivity). There are two types of assignment operators; a blocking assignment (=), and a non-blocking (>>. A generate–endgenerate construct (similar to V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synopsys
Synopsys, Inc. is an American electronic design automation (EDA) company headquartered in Sunnyvale, California, that focuses on silicon design and verification, silicon intellectual property and software security and quality. Synopsys supplies tools and services to the semiconductor design and manufacturing industry. Products include tools for logic synthesis and physical design of integrated circuits, simulators for development, and debugging environments that assist in the design of the logic for chips and computer systems. History Synopsys was founded by Aart de Geus, David Gregory, Alberto Sangiovanni-Vincentelli and Bill Krieger in 1986 in Research Triangle Park, North Carolina. The company was initially established as Optimal Solutions with a charter to develop and market logic synthesis technology developed by the team at General Electric's Advanced Computer-Aided Engineering Group. The company changed its name to Synopsys and moved to Mountain View, Califo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic Extraction
In electronic design automation, parasitic extraction is the calculation of the parasitic effects in both the designed devices and the required wiring interconnects of an electronic circuit: parasitic capacitances, parasitic resistances and parasitic inductances, commonly called parasitic devices, parasitic components, or simply parasitics. The major purpose of parasitic extraction is to create an accurate analog model of the circuit, so that detailed simulations can emulate actual digital and analog circuit responses. Digital circuit responses are often used to populate databases for signal delay and loading calculation such as: timing analysis; power analysis; circuit simulation; and signal integrity analysis. Analog circuits are often run in detailed test benches to indicate if the extra extracted parasitics will still allow the designed circuit to function. Background In early integrated circuits the impact of the wiring was negligible, and wires were not considered as e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Layout Extraction Format
In integrated circuit design, Library Exchange Format (LEF) is a specification for representing the physical layout of an integrated circuit in an ASCII format. It includes design rules and abstract information about the standard cells. LEF only has the basic information required at that level to serve the purpose of the concerned CAD tool. It helps in saving valuable resources by providing only an abstract view and thus consuming less memory overhead. LEF is used in conjunction with Design Exchange Format (DEF) to represent the complete physical layout of an integrated circuit while it is being designed. LEF originated by Tangent for their Place and Route (P&R) tools, which were bought by Cadence Design Systems Cadence Design Systems, Inc. (stylized as cādence)Investor's Business DailCEO Lip-Bu Tan Molds Troubled Cadence Into Long-Term LeaderRetrieved November 12, 2020 is an American multinational corporation, multinational technology and computational ....Smith, Mich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Place And Route
Place and route (also called PnR or P&R) is a stage in the design of printed circuit boards, integrated circuits, and field-programmable gate arrays. As implied by the name, it is composed of two steps, placement and routing. The first step, placement, involves deciding where to place all electronic components, circuitry, and logic elements in a generally limited amount of space. This is followed by routing, which decides the exact design of all the wires needed to connect the placed components. This step must implement all the desired connections while following the rules and limitations of the manufacturing process. Place and route is used in several contexts: * Printed circuit boards, during which components are graphically placed on the board and the wires drawn between them * Integrated circuits, during which a layout of a larger block of the circuit or the whole circuit is created from layouts of smaller sub-blocks * FPGAs, during which logic elements are placed and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Design Automation
Configurators, also known as choice boards, design systems, toolkits, or co-design platforms, are responsible for guiding the user through the configuration process. Different variations are represented, visualized, assessed and priced which starts a learning-by-doing process for the user. While the term “configurator” or “configuration system” is quoted rather often in literature, it is used for the most part in a technical sense, addressing a software tool. The success of such an interaction system is, however, not only defined by its technological capabilities, but also by its integration in the whole sale environment, its ability to allow for learning by doing, to provide experience and process satisfaction, and its integration into the brand concept. () Advantages Configurators can be found in various forms and different industries (). They are employed in B2B (business to business), as well as B2C (business to consumer) markets and are operated either by trained sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SPICE
In the culinary arts, a spice is any seed, fruit, root, Bark (botany), bark, or other plant substance in a form primarily used for flavoring or coloring food. Spices are distinguished from herbs, which are the leaves, flowers, or stems of plants used for flavoring or as a garnish (food), garnish. Spices and seasoning do not mean the same thing, but spices fall under the seasoning category with herbs. Spices are sometimes used in medicine, Sacred rite, religious rituals, cosmetics, or perfume production. They are usually classified into spices, spice seeds, and herbal categories. For example, vanilla is commonly used as an ingredient in Aroma compound, fragrance manufacturing. Plant-based sweeteners such as sugar are not considered spices. Spices can be used in various forms, including fresh, whole, dried, grated, chopped, crushed, ground, or extracted into a tincture. These processes may occur before the spice is sold, during meal preparation in the kitchen, or even at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
