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  2. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    The identifications consist of up to 5 letters. The first identification letter is for the measured value, the second is a modifier, 3rd indicates passive/readout function, 4th - active/output function, and the 5th is the function modifier. This is followed by loop number, which is unique to that loop.

  3. Wiring diagram - Wikipedia

    en.wikipedia.org/wiki/Wiring_diagram

    An automotive wiring diagram, showing useful information such as crimp connection locations and wire colors. These details may not be so easily found on a more schematic drawing. A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the ...

  4. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...

  5. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    Comparison of pictorial and schematic styles of circuit diagrams Common schematic diagram symbols (US symbols) The circuit diagram for a four-bit TTL counter, a type of state machine. A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit.

  6. Schematic - Wikipedia

    en.wikipedia.org/wiki/Schematic

    A schematic, or schematic diagram, is a designed representation of the elements of a system using abstract, graphic symbols rather than realistic pictures. A schematic usually omits all details that are not relevant to the key information the schematic is intended to convey, and may include oversimplified elements in order to make this essential meaning easier to grasp, as well as additional ...

  7. Patent drawing - Wikipedia

    en.wikipedia.org/wiki/Patent_drawing

    Patent model for loom. From 1790 to 1880 in the US, patent models were required. A patent model was a scratch-built miniature model no larger than 12" by 12" by 12", approximately 30 cm by 30 cm by 30 cm, that showed how an invention works. Some inventors still willingly submitted models at the turn of the twentieth century.

  8. General Electric T700 - Wikipedia

    en.wikipedia.org/wiki/General_Electric_T700

    CT7-2A: Basic model; CT7-2D: Higher flow compressor and surface coatings to improve resistance to wear and corrosion; CT7-2D1: Similar to the CT7-2D but uses a CT7-6 type hot section; CT7-2E1: Leonardo Helicopters AW189; CT7-6/-6A: The CT7-6/-6A turboshaft engines are upgraded commercial variants of the successful T700/CT7 engine family.

  9. Compaq Portable 386 - Wikipedia

    en.wikipedia.org/wiki/Compaq_Portable_386

    The Compaq Portable 386 is a computer released by Compaq Computer Corporation in 1987. [1] It was equipped with a 20 MHz Intel 80386 CPU, 1 MB RAM, 16 KB ROM, 1.2 MB 5¼-inch floppy, 40 or 100 MB hard disk drive, priced at US$ 7,999 or 9,999 respectively, [1] [2] and a 10" amber gas-plasma display.