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  2. System of units of measurement - Wikipedia

    en.wikipedia.org/wiki/System_of_units_of_measurement

    The avoirdupois system served as the general system of mass and weight. In addition to this, there are the troy and the apothecaries' systems. Troy weight was customarily used for precious metals, black powder, and gemstones. The troy ounce is the only unit of the system in current use; it is used for precious metals.

  3. Outline of the metric system - Wikipedia

    en.wikipedia.org/wiki/Outline_of_the_metric_system

    "The metric system is for all people for all time." (Condorcet 1791) Four objects used in making measurements in everyday situations that have metric calibrations are shown: a tape measure calibrated in centimetres, a thermometer calibrated in degrees Celsius, a kilogram mass, and an electrical multimeter which measures volts, amps and ohms.

  4. Von Neumann architecture - Wikipedia

    en.wikipedia.org/wiki/Von_Neumann_architecture

    A von Neumann architecture scheme. The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on the First Draft of a Report on the EDVAC, [1] written by John von Neumann in 1945, describing designs discussed with John Mauchly and J. Presper Eckert at the University of Pennsylvania's Moore School of Electrical Engineering.

  5. Mechanical systems drawing - Wikipedia

    en.wikipedia.org/wiki/Mechanical_systems_drawing

    The assembly drawing typically includes three orthographic views of the system: overall dimensions, weight and mass, identification of all the components, quantities of material, supply details, list of reference drawings, and notes. Assembly drawings detail how certain component parts are assembled. [2]

  6. Category:Systems of units - Wikipedia

    en.wikipedia.org/wiki/Category:Systems_of_units

    Centimetre–gram–second system of units; CGS system of units; Chinese units of measurement; Coherence (units of measurement) Comparison of the imperial and US customary measurement systems; Composition of Yards and Perches; Conventional electrical unit

  7. Block diagram - Wikipedia

    en.wikipedia.org/wiki/Block_diagram

    An example of this is the function block diagram, one of five programming languages defined in part 3 of the IEC 61131 (see IEC 61131-3) standard that is highly formalized (see formal system), with strict rules for how diagrams are to be built. Directed lines are used to connect input variables to block inputs, and block outputs to output ...

  8. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official status in nearly every country in the world, employed in science ...

  9. Functional block diagram - Wikipedia

    en.wikipedia.org/wiki/Functional_block_diagram

    A functional block diagram, in systems engineering and software engineering, is a block diagram that describes the functions and interrelationships of a system. The functional block diagram can picture: [1] functions of a system pictured by blocks; input and output elements of a block pictured with lines; the relationships between the functions ...