Freely set counter

[kbn]

This counter counts up to the target value.
Resets to 0 when the target value is reached.
The target value can be freely set by the user using the setting value of the signal counter.
 

Spoiler

compaction

The upper signal counter is a variable for setting the target value.
The lower signal counter is a display that actually counts up.

The mechanism of this circuit is to fill the set target value from the upper digit, and to reset it when it fills to the lowest digit.
I think it's easier to understand if you actually look at the save data.

Ironic Spacestation.sav

 

Example :

Spoiler

With the target value = 750, the signal counts up in 0.5s + 0.5s = 1s,
After 750 seconds, a reset signal is issued and the game is paused by the Automated Notifier
 

Spoiler

The concept is different, but I saw this thread for some hints and inspiration.
Thank you.