haha! Basic and DOS for me IN THE EARLY 80s as well! I switched majors in the middle of Fortran, or maybe I took a P/F, I forget now

I believe, Maggie, my love, that you and I are of an age
As far as this little Raspberry Pi - it is a magnificent concept and should get many nerds/geeks... and I forgot the other word I was told to use instead of these outdated ones LOL My kids try to keep me 'in the know' so my terminology is up to par, but... sheesh, I forget some of the words

And yes, PCU the size of a cell phone was an over the top description

I was thinking LARGE! Ha!
Uhhhhhh, I have bought these for years to use with my eGos at work, the last batch was pretty bad from FastTech. They were just a quick clearo to grab and fill when I wasn't home. I will tell you that they are a hit and miss, some are missing a notch at the bottom, so I've had to file them down to get some air through them, some juices, whether classified as tank-crackers or not, wear them out pretty quick, and many come with hairline cracks already, so if it disintegrates in your hand, you found a cracked one. The vape flavor quality may last a day with heavy vaping before it's gunked up, and then you trash them because they are not rebuildable.
If you want some suggestions, I would say to get :
#1
https://www.fasttech.com/p/1536500 RG400 Bottom Coil Glass Clearomizer (4.0mL) 1.8+2.2ohm GLASS & SS / RECOILABLE
#2
https://www.fasttech.com/p/1528500 RG200 Bottom Coil Clearomizer (2.0mL) 1.8+2.2ohm GLASS & SS / RECOILABLE
Replacement coils if you do not recoil your own:
$4.80 Authentic Protank Clearomizer Coil Heads (5-Pack) - 1.5ohm at FastTech - Worldwide Free Shipping
$4.88 Authentic Protank Clearomizer Coil Heads (5-Pack) 5-pack - 2.5
I have these and many more since I use eGos at work & also on walks for stealth vaping. They are not bad, the coils can be replaced, but the glass ones above are my favorites because only dropping them on concrete has destroyed mine =]
https://www.fasttech.com/p/1579400 Calabash Style Bottom Coil Clearomizer (2.8mL) 2.4ohm <- LOVE IT!!!!
https://www.fasttech.com/p/1567100 V5 Rebuildable Dripping Atomizer foggy version / 1*airhole <- LOVE IT!!!!
https://www.fasttech.com/p/1490700 Vivi Tank BCC Bottom Coil Clearomizer (3.5mL) 2.4ohm <- LOVE IT!!!!
https://www.fasttech.com/p/1536403 eVod-C BBC Bottom Coil Clearomizer (2.0mL) [Polycarbonate] 2.4ohm
https://www.fasttech.com/p/1456403 GS-H5 Bottom Coil Clearomizer (3.0mL) [Polycarbonate] 2.4ohm
Adding:
$23.36 T4 Electronic Cigarettes Round Mouth Atomizer (6-Pack / 2.4mL) 6-pack - ships with one of each color / metal drip tip at FastTech - Worldwide Free Shipping - TIP DISINTEGRATES and the vape is not that great... looks gorgeous on an eGo, but eh...