Afternoon chaps/chappesses ( depends on where you are

)
I'm conducting a little preliminary research for my paper on Avionics pertaining to flight safety improvements over recent years ( its a working title, so deliberately vague and broad) and was seeking a little guidance on specific advances in systems. My initial thoughts related to:
- TCAS
- 'Glass Cockpit; focusing on certain areas/instrumentation'
- Transponder
- GPWS
At this early stage what
exactly I want do is not set in stone, however, I don't want to change the focus completely.
I want the paper to give a fairly comprehensive view on the advances and how they have helped contribute to air safety.
Any help would be greatly appreciated;
FS