They'd still be using...
Daisy-chained 128k Spectrums and thermal printers if they could get away with it at Colchester General - but they're more expensive than the utter cack that's there now (and arguably more functional) so that's out.
I'm surprised they aren't using carrier pigeons (carrier ducks were tried (for messaging and mowing the hospital lawns) but the messages got soggy. Also bird flu).
More funding would help, but at this point that's all it would do. The NHS is like a stage 4 cancer patient - it's already dead, the world just hasn't quite caught up yet. In order to fix the problems you'd have to divorce it from any government control and monetary limitations for at least 2 decades and probably more, while growing services and reducing hours (while increasing pay) and hoping fervently that there isn't any crises while you are doing it. That's about as likely to happen as Cliff Richard converting to Satanism (not that he hasn't sent his fair share of souls to the dark side - Mistletoe & Whine on repeat for example).
And for fscks sake - STOP doing pointless operations on 85-90 year olds. Some of them have so many artificial joints that if they go swimming at Southend sonar operators end up with tinnitus, in the bloody Baltic! When you can diagnose cancers and other diseases in teenagers and young people who are or will be contributing to the NHS, treat expectant mothers properly and with respect, not to mention a GP service that hasn't ended up locked in an era when landcrabs roamed the earth (Morris, not Macra). Then, and only then, may you start doing heart surgery on the meatspace equivalent of Cohen the Barbarian. Oh and if a consultant can't find their ass with both hands please kindly sack them.
The NHS was a good idea and still is a good idea. The enactment of that idea however has been an unmitigated example of how not to do it - for so long fuckup-ery is permanently and terminally ingrained