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--- glossary:glossary_l [2020/05/20 23:17] – Correct and enhance diagram for LED. Add detail and usefulness. tgerbic
+++ glossary:glossary_l [2022/03/24 20:19] (current) – [LENZ] slightly amplify Lenz's role in DCC chrisridd
@@ Line 6: / Line 6: @@
 Latching can apply to both mechanical devices and electronic circuits.
-An example of mechanical latching would be a push on / push off switch, [[https://en.wikipedia.org/wiki/Latching_switch|see here.]] See also description of a [[https://en.wikipedia.org/wiki/Relay#Latching_relay|latching relay.]] (e.g. [[http://www.digikey.ca/product-detail/en/EE2-5NU/399-11056-5-ND/4291122|relay]])\\
+An example of mechanical latching would be a push on / push off switch, [[wp>Latching_switch|see here.]] See also description of a [[wp>/Relay#Latching_relay|latching relay.]] (e.g. [[http://www.digikey.ca/product-detail/en/EE2-5NU/399-11056-5-ND/4291122|relay]])\\
-An example of an electronic latch would be [[https://en.wikipedia.org/wiki/Flip-flop_(electronics)|a flip-flop]] or bistable circuit.\\
+An example of an electronic latch would be [[wp>Flip-flop_(electronics)|a flip-flop]] or bistable circuit.\\
 A standard relay may be made self latching by supplying a current path for the coil through one of its normally open contact sets.
-===== Layout Command Control =====
+===== LCB =====
+==== Layout Control Bus ====
+The old way of connecting up a model railway layout was for every point and signal to have a set of wires back to the control box where switches were located for the operator to use. The idea of a layout control bus is to have a small number of wires (the bus) carry the instructions around the layout. Several different ways of doing this have been devised and some of them are described on the Knowledgebase. Using modern technology the switches can be implemented in a lot of different ways or even be replaced by automation.
+===== LCC =====
 {{ :lcb:lcc.png?100|}}
 [[:lcb:start&#layout_command_control_lcc|Layout Command Control]] (LCC) s a system for controlling all the functions on your layout that don’t have to do with how fast the locomotive is moving -- things like signals, or sounds, or passenger car lighting.  LCC is NMRANet, just under a different name.  LCC is designed as a separate, generic control bus which is positioned to take the load off your throttle bus. It is a bi-directional data bus that can send and receive data.  Since it is an NMRA Standard, you are not confined to one manufacturer's products. Any manufacturer can make LCC compatible devices.
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 ===== Lead free =====
 This is a change in the content of solder. Lead free solder is generally recommended due to Health and Safety considerations, but 60:40 tin:lead is preferred for electronic kits and is still available from suppliers such as Rapid Electronics. It is important to note that lead and lead free solders require different soldering iron temperatures.
 ===== LED =====
@@ Line 32: / Line 38: @@
 ===== LENZ =====
-A German [[glossary:glossary_d#dcc|DCC]] system and decoder manufacturer.
+A German [[glossary:glossary_d#dcc|DCC]] system and decoder manufacturer. Lenz invented the DCC technologies which became standardised by the [[glossary:glossary_n#nmra|NMRA]]
 =====LiFo=====
 __L__ast __i__n __F__irst __o__ut, data buffer where the most recent entry is the first to be retrieved. Commonly referred to in programming as a 'Stack' it is used to save the return address (Program Counter) and other data that must be restored when a Sub Routine terminates.