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In computer engineering, a hardware description language (HDL) is a specialized computer language used to describe the structure and behavior of electronic circuits, usually to design application-specific integrated circuits (ASICs) and to program field-programmable gate arrays (FPGAs).
Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining millions or billions of MOS transistors onto a single chip. VLSI began in the 1970s when MOS integrated circuit (metal oxide semiconductor) chips were developed and then widely adopted, enabling complex semiconductor and telecommunications technologies.
Applying these two concepts results in an efficient data structure and algorithms for the representation of sets and relations. [ 10 ] [ 11 ] By extending the sharing to several BDDs, i.e. one sub-graph is used by several BDDs, the data structure Shared Reduced Ordered Binary Decision Diagram is defined. [ 2 ]
The input to the algorithm is an undirected graph G = (V, E) with vertex set V, edge set E, and (optionally) numerical weights on the edges in E.The goal of the algorithm is to partition V into two disjoint subsets A and B of equal (or nearly equal) size, in a way that minimizes the sum T of the weights of the subset of edges that cross from A to B.
Structures and unions work much like they do in the C programming language. SystemVerilog enhancements include the packed attribute and the tagged attribute. The tagged attribute allows runtime tracking of which member(s) of a union are currently in use. The packed attribute causes the structure or union to be mapped 1:1 onto a packed array of ...
A PCell is a piece of programming code. This code is responsible for the process of creating the proper structure of the PCell variants based on its (input) parameters. For the example of a physical PCell, this code generates (draws) the actual shapes of the mask design that comprises the circuit.
The feedback vertex set problem has applications in VLSI chip design. [15] Another application is in complexity theory. Some computational problems on graphs are NP-hard in general, but can be solved in polynomial time for graphs with bounded FVS number. Some examples are graph isomorphism [16] and the path reconfiguration problem. [17]
The reddish structures are polysilicon gates, and the solid at the bottom is the crystalline silicon bulk. GDSII stream format ( GDSII ), is a binary database file format which is the de facto industry standard for electronic design automation (EDA) data exchange of integrated circuit (IC) or IC layout artwork. [ 1 ]