plexuss

Yes probably. What model is it? I repair and restore old HP calculators. One thin about all the models from 1972 through the early 1980s that use a battery pack - do not power the calculator off the adaptor alone - these models used a working battery pack as part of the adaptor voltage "regulation" - if you power off the adaptor without the battery a much higher voltage will get into the calulator and can permanently damage it. If you dont have a working battery pack, the only way to test it is with a bench power supply set to a safe voltage. For many of these models I install a lithium battery system and USB-C charge port so we no longer have to mess around with old leaky batteries and HP's poor implementation for charging them. Some of the models that are like this are: 35, 45, 55, 65, 67, the 20-series (21, 22, 25 etc) and the 30-series (31E, 32E, 33E, 33C, 34C etc). After these, the "Pioneers" came out (11C, 15C etc) which dont use a power adaptor and are safe.

I am a UX designer with 30 years of digital design experience, 20 of those in UX/UI design. In my opinion, UX is dead. Companies don't want it. They still think they want it from a competition standpoint, but in terms of what value UX brings, they don't care and would prefer not to have it. UX in corporations is purely a political thing now.

It used to be that commerical activity on the internet was not allowed. This was because, in part, we knew it would ruin the experience. Now, the internet is pretty much 100% commercialized. its a wasteland and it will only get worse.

I have an exit strategy in play to get out of UX and anything to do with working on the internet. UX and UI design will be rolled into "design" and eventually be automated. Same with coding. So, if you think you have a nice career ahead of you as a UX or UI designer or a web developer, think again. Your days are numbered.