extract zip:

unzip LogicSrc.zip

Dependencies libgtkmm-3.0:

sudo apt-get libgtkmm-3.0

change dir:

cd Logic

make

Setup:

add dtoverlay=gpio-no-irq to /boot/config.txt

Reboot important to keep your pi running!!!

Run:

dist/Debug/GNU-Linux/logic

For a first external signal connect a switch to Gpio 4 (Raspi 40 pin header pin 7 Gpio pinout) and Ground (pin 9).

With the program you now choose the Trigger 4 and "Single" (capture) and activate the switch.

In a moment you see that a switch is not just on or off but usually bounces back and forth some times.