Stop and restart
Stop and restart refers to a type of signal circuit where an input signal is converted into a stationary object, which is then re-activated by a secondary input signal. This can be used either as a memory device storing one bit of information, or as a simple delay mechanism. In the following January 2016 example by Martin Grant, a ghost Herschel marks the output signal location, and a "ghost beehive" marks the location of the intermediate still life.
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RLE: here Plaintext: here
The eater 1 in the lower left corner catches the restart glider if no input signal has come in to create the beehive. This eater could be removed if it is useful to have both a "0" and a "1" output for a memory cell mechanism.
- Martin Grant (January 8, 2016). Re: The Hunting of the New Herschel Conduits (discussion thread) at the ConwayLife.com forums