Probably quite a bit, since most of what we use today has it's roots in some of Bell Labs' research.
The part about computing is the story I got during my tenure at the old WE manufacturing arm. That didn't go well for them - their first attempt at selling computers was some banal-tier overpriced rebranded Olivetti model, the AT&T PC 6300. While it was a solid enough XT+ clone (we had them everywhere at Lucent, mostly relegated to older test systems,) it wasn't anything special and was full of proprietary connections. That was their only attempt and all of that bluster was just that - bluster.
I do remember calling the helpless desk for service on one that ran my wire-spring tester. It just needed a CMOS battery. The kid they sent up had literally never seen an XT machine and argued up and down with me that nothing that old had a CMOS battery. I ended up having to change it myself because moronic children.
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