Do not look at the top part of the breadboard. (There are only some rgb leds and HC595). The HC165N receives either LOW or HIGH values after clicking the button. I mean there is not any floating value.
As far as I understand CMOS chip - contains a semiconductor element that makes chip itself more reliable and efficient
And how you understand that my shift register contains CMOS chip? Sorry if my questions feels dumb🫠 and what should I use instead?