Preset desired number and press LOAD.
The 555 automatically stops delivering impulses when the preset is reached.
Watch the OUTPUT of leg 3 of the 555.
The blue display counts DOWN from the preset number.
The red display counts UP to that number.
Basics for an easy + - * / calculator for instance.
Be inspired you folX out there. I wanna see someone picking up on this who builds a working calculator with minimum parts!
Enjoy
πβ¨βπ½ππΊπ·ππΈππ»πππ«π