PCB Layout/DAC build

[EJC]

Hi Everyone!!!

New here, just hoping to get a bit of advice/criticism.  I'm doing an "upgrade" of a device used by a professor at my local university.  It is a design from the late 80's/early 90's that I am adding a micro-controller to eliminate the old parallel port input and 555 timer sequencer.  Keeping everything else in the design as close to the original as possible.  I've built a few of these on proto-boards etc so the design works, but I'd like to make a surface mount PCB.  I chose the parts/footprints mostly by what was available on JLCPCB as I want to have this built.  I'm brand new to PCB design/layout so I was hoping to get some criticism on this design.  I tried to separate the digital/analogue grounds to only meet at the power input if that makes sense.  I attached the print with the original schematic, and my kicad files.  Any advice would be welcomed and appreciated!!

Thanks,
John

[liaifat85]

If your design is free of DRC errors, I think you can proceed to print the prototype.