Many fonts have a license that allows them to be embedded in a pdf. Newer fonts usually have a flag that tells the software if the font can be embedded or not, not all software respects that flag though. Older fonts don’t have the flag and will embed even if you are not allowed to embed them.
Those fonts are not free. They may be just ttf files, but there is a massive amount of work that goes into creating a font with unicode support. If you just want fonts for basic compatibility, you can use open source fonts with compatible metrics such as the Liberation fonts or use the microsoft core fonts that haven’t been updated in 20 years.
If you don’t want to get them from microsoft, you can purchase a license elsewhere. Microsoft allows them to be distributed freely as long as the files are not modified. That’s why they are always packaged in an executable installer.
The password will be stored in EEPROM in newer laptops. Removing the battery will not clear the password and could make things even worse since you won’t be able to change any settings that get reset.
The best thing would be to return it and find a different one that’s not locked.
KiCAD for PCB design.
PulseView for USB logic analyzers.
DSRemote for remote control of Rigol oscilloscopes.
FreeCAD for 3D CAD.
SDR++ and SDRangel for SDR.
Fldigi, wsjtx & QSSTV for ham radio digital modes.
It connects my laptop to the internet when I’m away from home.
A phone can’t replace a computer unless you put Linux on it and connect a monitor and keyboard. Even then, it will perform like a 15 year old computer.
You can get small project enclosures to put them in. Some PVC pipe and end caps could also work.
I would probably just use some good quality, adhesive heat shrink if they are out of the way though.
I’ve had good results discharging a 450V 1kJ capacitor bank through several turns of 10 AWG wire. If you don’t have a capacitor bank laying around, one of those magnetizers will work just as well.
You could also use a crystal for the ATtiny and get the same accuracy as the RTC. It should be accurate to about 20-30 seconds per month with a good crystal.
The internal oscillator only has an accuracy of around 1% after you calibrate it. It would be off by over 7 hours after a month. It’s also quite sensitive to voltage and temperature changes.