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Can anyone give an example of sliding blocks memory (simplest and smallest one)?

and how it can be used to make a counter?

Thanks again )

nobody can help? ((((

You can pull a block in with two gliders like this:
You can push a block out with three gliders like this:

137ben wrote:You can pull a block in with two gliders like this: ...
You can push a block out with three gliders like this: ...

Early this year Calcyman put together a binary-counter pattern using these reactions attached to an implementation of a finite-state machine:

http://calcyman.awardspace.co.uk/life-m ... counter.mc

You can copy and paste the counter.mc text directly into Golly, but you may have to set the rule to B3/S23 since the file doesn't specify it.

The minimal circuitry to run a binary counter would be much smaller than this, of course -- depends on whether you want the counter to be triggerable from an external signal, or if it can just increment itself continuously.

thanks everyone )