196

16224 readers

3935 users here now

Be sure to follow the rule before you head out.

Rule: You must post before you leave.

^other^ ^rules^

founded 1 year ago

MODERATORS

[email protected]

535

QR code rule (lemmy.dbzer0.com)

submitted 3 weeks ago by [email protected] to c/[email protected]

42 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 37 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

For those wondering, when using the biggest QR code with the maximum error correction (10,208 bytes), 1,454,942 QR codes is slightly less than 14GiB, which should be more than enough for a Windows ISO.

My math: (1454942×10208)÷1024÷1024÷1024≈13.83

Edit: Damn another guy beat me to it, now I wonder how I'm so far off.

[–] [email protected] 6 points 3 weeks ago (1 children)

Because the other comment had a ~~useless~~ counterproductive step in it, namely base64.

[–] [email protected] 5 points 3 weeks ago* (last edited 3 weeks ago)

Maybe, but also I think I was looking at the raw 'data bits', not 'binary' data. It's actually almost exactly 4GiB, even when dropping down to minimum error correction (1.7 GiB otherwise).

(1454942×2953)÷1024÷1024÷1024≈4.00

Edit: So if alphanumeric mode could store lowercase letters, base64 would've stored more.