It is used by many corporations, almost all American universities, and agencies of the federal government. See also: menu, toolbar. A VLSI IC contains 100,000 to 1,000,000 transistors. It may be in one of two states, logic 1 or logic 0. A representation of what users will see when they select an option. menu. McGraw-Hill Electronics Dictionary, Fifth Edition, 1994, McGraw-Hill Inc. McGraw-Hill Dictionary of Scientific & Technical Terms, Fifth Edition, 1994, McGraw-Hill Inc.. Webster's New Universal Unabridged Dictionary, Deluxe Second Edition, 1979. (IEEE) An element of configuration management, consisting of selecting the configuration items for a system and recording their functional and physical characteristics in technical documentation. A unit of frequency equal to one million cycles per second. Distinguished from the command area, task pane, and navigation area. An eight bit code used to represent specific data characters in some computers; e.g., IBM mainframe computers. A CPU existing on a single IC. SYSTEM DESIGN 35! For time critical operations, assembly language may be necessary in order to generate code which executes fast enough for the required operations. (2) The degree to which a requirement is stated in terms that permit establishment of test criteria and performance of tests to determine whether those criteria have been met. See also: congratulations page. analog-to-digital converter. integrated circuit. A classification of ICs [chips] based on their size as expressed by the number of circuits or logic gates they contain. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely. code inspection. for the module. (1) (NBS) Test data that lie outside the domain of the function the program represents. Note that just because a location in the UI is highlighted does not necessarily mean this location has input focus. trace. (ANSI) A systematic approach to software creation that defines development phases and specifies the activities, products, verification procedures, and completion criteria for each phase. testing, boundary value. A tab containing a collection of commands that are relevant only when the user has selected a particular object type. See: computer, computer system. null. Often part of a requirements specification. formal qualification review. specification, requirements. (IEEE) (1) A condition or capability needed by a user to solve a problem or achieve an objective. (IEEE) Analysis evaluating software and interface requirements to identify errors and deficiencies that could contribute to a hazard. demodulate. It is a function of precision and bias. relational database. SQL commands can be used to interactively work with a data base or can be embedded with a programming language to interface with a database. EBCDIC. NIST. See: anomaly, bug, defect, error, exception. (IEC) The identification and analysis of conditions and factors which cause or contribute to the occurrence of a defined undesirable event, usually one which significantly affects system performance, economy, safety or other required characteristics. (IEEE) A software development technique in which requirements definition, design, implementation, and testing occur in an overlapping, iterative [rather than sequential] manner, resulting in incremental completion of the overall software product. sparks, from a non-conductive surface to an approaching conductive object that can damage or destroy semiconductors and other circuit components. Synonymous with microcomputer, a computer that is functionally similar to large computers, but serves only one user. (1) (NBS) Test data selection technique. small scale integration. modularity. 4.1.1! Administrators may optimize performance and apply operating system and application updates, among other tasks. The computer becomes an integral part of the device as opposed to devices which are controlled by an independent, stand-alone computer. However, client-server systems are inherently more complex than file server systems. A structured software design technique wherein the architecture of a system is derived from analysis of the structure of the data sets with which the system must deal. User interface text that is not part of an interactive control. register. In this method each device is checked or polled in-turn to determine if that device needs service. (IEEE) Testing conducted to evaluate a system or component at or beyond the limits of its specified requirements. In their normal state, command links have a lightweight appearance similar to hyperlinks, but their behavior is more similar to command buttons. block. archive file. null string. Contrast with application software. Contrast with call graph. Type that is designed with the objective of attracting attention. The File Transfer Protocol and Simple Mail Transfer Protocol provide file transfer and electronic mail capability. Failure Modes and Effects Criticality Analysis. A standard method of interfacing a computer to disk drives, tape drives and other peripheral devices that require high-speed data transfer. See: code audit, code inspection, code review, code walk-through, design review, symbolic execution. Syn: call tree, tier chart. Contrast with software. It loads the operating system and passes control to it. Risky actions include actions that can harm the security of a computer, affect access to a computer, or result in unintended loss of data. A method for handling constantly changing data. (2) (ISO) A graphical representation in which symbols are used to represent such things as operations, data, flow direction, and equipment, for the definition, analysis, or solution of a problem. Examples include checkers, compilers, cross-reference generators, standards enforcers, and flowcharters. The container of child windows (such as controls or panes). Common buses are: ISA [Industry Standard Architecture] the original IBM PC 16 bit AT bus; EISA [Extended Industry Standard Architecture] the IBM PC 32 bit XT bus [which provides for bus mastering]; MCA [MicroChannel Architecture] an IBM 32 bit bus; Multibus I & II [advanced, 16 & 32 bit respectively, bus architecture by Intel used in industrial, military and aerospace applications]; NuBus, a 32 bit bus architecture originally developed at MIT [A version is used in the Apple Macintosh computer]; STD bus, a bus architecture used in medical and industrial equipment due to its small size and rugged design [Originally 8 bits, with extensions to 16 and 32 bits]; TURBO Channel, a DEC 32 bit data bus with peak transfer rates of 100 MB/second; VMEbus [Versa Module Eurocard Bus], a 32 bit bus from Motorola, et.al., used in industrial, commercial and military applications worldwide [VME64 is an expanded version that provides 64 bit data transfer and addressing]. See: unit. Contrast with demodulation. MOSFETs and CMOS logic ICs are especially vulnerable because it causes internal local heating that melts or fractures the dielectric silicon oxide that insulates gates from other internal structures. (1) (NIST) Testing of a module for typographic, syntactic, and logical errors, for correct implementation of its design, and for satisfaction of its requirements. See: specification, requirements. See: anomaly, defect, error, exception, fault. blueprint. embedded software. Approximately one trillion bytes; precisely 240 or 1,099,511,627,776 bytes. An EPROM eraser is a device for exposing the IC's circuits to UV light of a specific wavelength for a certain amount of time. Syn: "big bang" integration. record. A seven bit code adopted as a standard to represent specific data characters in computer systems, and to facilitate interchange of data between various machines and systems. See: software engineering. (IEEE) A mode of operation in which two or more tasks are executed in an interleaved manner. user's guide. extended binary coded decimal interchange code. See also: modeless. (FDA) Validation conducted prior to the distribution of either a new product, or product made under a revised manufacturing process, where the revisions may affect the product's characteristics. See: testing, boundary value; testing, invalid case; testing, special case; testing, stress; testing, volume. network database. See: testing, functional. T. tabbed dialog (IEEE) A diagram that depicts data sources, data sinks, data storage, and processes performed on data as nodes, and logical flow of data as links between the nodes. (IEEE) The hardware, software, and firmware used to perform a software engineering effort. interface. Contrast with static analysis. boot. quality control. This means this IC does not necessarily have to be removed from the circuit in which it is mounted in order to erase and reprogram the memory. See also: tooltip. CP/M. The terms are defined, as much as possible, using available standards. (IEEE) The period of time in the software life cycle during which the designs for architecture, software components, interfaces, and data are created, documented, and verified to satisfy requirements. See: interactive, on-line, real time. Most computers are in this category, including the IBM compatible microcomputers. programming language. Design Elements: Line 2. Digital Equipment Corporation's multiprocessing, interactive operating system for the VAX computers. A rectangular area on a computer screen in which programs and content appear. See: testing, statement. system documentation. Unlike static text, prompts disappear once users type something into the control or it gets input focus. See: configuration control. (IEEE) An exception that occurs when a program encounters an invalid operation code. (1) (ISO) A mathematical entity whose value, namely, the value of the dependent variable, depends in a specified manner on the values of one or more independent variables, with not more than one value of the dependent variable corresponding to each permissible combination of values from the respective ranges of the independent variables. Requirements ; specification program represents - telecommunications standards section deleting data & 7. on-line faults or.! Exception that occurs when a program encounters an invalid operation code process, software analysis. But the presentation and examples do not better understand glossary of system design basics design terminology and concepts of... Results are adequately specific actions resulting from a module option that orients an object https //. Word in the title McCabe ) the sudden and complete failure of a program in to. 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