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--- glossary:glossary_s [2021/08/08 06:20] – Added SoC and moved SoD Wayne
+++ glossary:glossary_s [2022/03/06 06:25] – [Shottky Diode] jan_carr
@@ Line 8: / Line 8: @@
 **S**tash **A**cquired **B**eyond **L**ife **E**xpectancy. A stash of "useful things" a hobbyist has acquired and cannot bring themself to throw out in case they might be needed.
+===== Schottky Diode =====
+Named after the German physicist Walter H. Schottky, a Schottky diode is a solid state diode formed by the junction of a semiconductor with a metal. It is used when a low forward voltage drop or high switching speed is required. A conventional solid state silicon diode has a typical forward voltage of 600–700 mV, while a Schottky's forward voltage is 150–450 mV. This lower forward voltage allows higher switching speeds and lower power losses.
 ===== SD4 =====
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 Start of Day is a term used to denote a process by which the initial state of a system is established.\\
-In [[glossary_c#cbus|CBUS]] this is achieved usually by an input module generating an event which other input modules have been taught to recognize as a SoD. In response these other modules generate a set of events representing the current state of their inputs.\\
+In [[glossary_c#cbus|CBUS]] this is achieved usually by an input module generating an event which other input modules have been taught to recognize as a SoD. In response these other modules generate a set of events representing the current state of their inputs. See [[cbuscentral:sod|Start Of Day in CBUS]].\\
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+===== SPI =====
+A Serial Peripheral Interface provides a way to connect one or more slave devices to a master device. A little more information of it's use in MERG is at: [[arduino:spi|Arduino Use of SPI and USI]]
 ===== Sprog =====