glossary:glossary_i
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
glossary:glossary_i [2019/03/02 10:30] – [ICSP] WortingUK | glossary:glossary_i [2022/01/26 10:40] – [Include Guard] WortingUK | ||
---|---|---|---|
Line 5: | Line 5: | ||
===== ICs ===== | ===== ICs ===== | ||
+ | An integrated circuit (IC) is an electronic component which typically packages a collection of transistors, | ||
- | Integrated Circuits are usually called ICs or chips. They are complex circuits which have been etched onto tiny chips of semiconductor (silicon). The chip is packaged in a plastic holder with pins spaced on a 0.1" | ||
- | {{: | ||
- | [[http:// | ||
+ | ===== ICSP (In Circuit Serial Programming) ===== | ||
+ | |||
+ | ICSP is a means whereby embedded microprocessors are ' | ||
+ | There are no standard physical designs/ | ||
+ | Generally MERG modules, with PIC microprocessors, | ||
+ | [[: | ||
+ | Arduino modules use a USB connection.\\ | ||
+ | AVR ATMEGA chips use a 6 pin connector based on SPI bus. (Optional on Arduino AVR modules)\\ | ||
+ | Atmel SAMD chips have a OneWire ICSP (signal/ | ||
- | ===== ICSP ===== | ||
- | In Circuit Serial Programming.\\ | ||
- | A means whereby microprocessors (PICs etc), may be programmed while mounted in the circuit they are intended to control. There are NO standard physical designs used for ICSP. Many MERG modules are provided with a common design connector to facilitate this, and a lead to connect the popular PICKIT programmer to the CBUS connector is [[: | ||
===== Incandescent lamps ===== | ===== Incandescent lamps ===== | ||
- | Lamps emit light when an electric current passes through | + | Incandescent lamps emit light when an electric current passes through a thin wire filament, which becomes very hot and glow brightly. Filament lamps may have a shorter lifetime than most electronic components because the filament |
- | Filament lamps have a shorter lifetime than most electronic components because | + | |
- | \\ {{: | + | \\ {{: |
+ | |||
+ | {{: | ||
\\ [[http:// | \\ [[http:// | ||
+ | |||
+ | |||
+ | ===== Include Guard ===== | ||
+ | |||
+ | A method of preventing a C or C++ header source file (.h or .hpp), from being included more than once by other files. It uses ' | ||
+ | |||
+ | ''# | ||
+ | |||
+ | ''# | ||
+ | |||
+ | ''/ | ||
+ | |||
+ | ''# | ||
+ | |||
+ | If the compiler supports it, then following can be used | ||
+ | |||
+ | ''# | ||
+ | |||
+ | ''/ | ||
+ | |||
Line 33: | Line 60: | ||
- | ===== Infra red emitter ===== | + | ===== Infrared |
- | These are LEDs which emit outside of the visible light range. | + | These are light emitting diodes (LEDs) which emit light outside of the visible light spectrum. |
IR emitters are generally mounted in plastic with clear or smoke color lens. | IR emitters are generally mounted in plastic with clear or smoke color lens. | ||
\\ {{: | \\ {{: | ||
- | ===== Infra red receiver/ | + | ===== Infrared |
- | Two types of IR receivers are used, a phototransistor or a photodiode | + | There are two common |
\\ {{: | \\ {{: | ||
Line 54: | Line 81: | ||
- | Name for means of linking the operation of points and signals such that signals can only show a proceed aspect when points are correctly set, and that points cannot be moved unless the signals over them are showing stop aspects. Interlocking can be mechanical, electrical using relays or carried out by computers. | + | Name for a means of linking the operation of points and signals such that signals can only show a proceed aspect when points are correctly set, and that points cannot be moved unless the signals over them are showing stop aspects. Interlocking can be mechanical, electrical using relays or carried out by computers. |
=====ISR===== | =====ISR===== | ||
- | Interrupt Service Routine. A subroutine | + | |
+ | An Interrupt Service Routine |
glossary/glossary_i.txt · Last modified: 2023/07/25 15:55 by JohnFletcher