good old logic circuits

my suggestion is to make a video on diode steering TTL or cmos logic inside the gates.
as for the video presentation, this is good, but add a dark border to improve contrast or invert to a blackboard. you may have too much on screen white over time.

note- that a live eevblog whiteboard video has a border and Dave's head on the side for added contrast to the board white. also in live video, a whiteboard is often seen as off-white. or 90% - 80% white level.
so to fix, IMO the border need only be 5% to 10% darker. pre plan your freehand drawing spacing so you do not end up squashing / going off screen or a big blank space. save time erasing / rubbing off, if you can? just cut or edit out to save time.
I also like the use of inserted schematic art images. to save time & show the more complicated diagram blocks.
as its not a whiteboard you can add more color, in your inserted schematic art images , but gust a suggestion,
colors do change on a background. yellow will disappear & dark blue can look almost black. but invert to a blackboard and your red needs to be pink to look red on a dark background. yellow will look faded or white.
do you need a separate channel? not IMO.