There's a lot of things like this, especially when the connector is commonly used for just one thing. One is "composite video" which at one point or another I have heard items on this list used interchangeably (though not always at the same time):
composite video
- RS-170
- monochrome video
- EIA-170
- NTSC
- black and white video
- CVBS
- B&W video
- RS-170A
- analog video
- PAL
- yellow RCA plug
- just plain "video"
These don't even all refer to the same thing, and some are definitely more correct than others, but all are used even by technical people.
Here's another one: "Amphenol connector", "Cannon connector" or "Molex connector". It's the same as saying "Ford car".
The 1.44 MB diskette is my canonical "dear God what happened"-named thing.
The traditional diskette is 1440 KiB. I.e., base-2, today named "kibibyte" though in that day that word didn't exist yet & it was just a kilobyte and the base 2 inferred from context. Clearly, someone didn't infer, and moved the decimal, so that 1.44 "MB" is 1.44 * 1000 * 1024 bytes. The actual capacity is thus either 1.41 MiB or 1.47 MB.
IMO it's the ISP's who are intentionally misleading people. Average Joe might have some inkling of how big a gigabyte is these days, but nobody except a network engineer cares what a gigabit is. I can't imagine how many people buy gigabit fiber expecting a gigabyte. It would sound much less impressive if it were marketed as 125MB/s like it should be. They should at least be required to show both, not make people convert units if they want to find out how fast their advertised internet is supposed to download their 50GB game.
I don't think that counts as intentionally misleading since bits/second is the correct measurement for any serial connection and has been since the days of Baudot. Joe Blow might misunderstand it but that's on Joe.
It's not like the situation with hard drives where they're going against industry convention for marketing purposes.
I have had to debug enough fires because of stupid unit confusion that I now make the point of being extremely pedantic with the use of the right unit.
> today named "kibibyte" though in that day that word didn't exist yet & it was just a kilobyte and the base 2 inferred from context
That is still what most people do. Only very pendantic individuals insist on using KiB, etc. Normal people are just fine inferring from context whether base-2 or base-10 is meant.
My opinion is use KiB as the abbreviation but pronounce it as kilobyte. It pisses off both sides but makes the most sense to me for both being technically and historically accurate at the same time.
Perhaps the formatted capacity, or the safe capacity, but I can specifically recall being able to format those same floppies up to... I forget, maybe ~2MB? Something like that.
Yeah, the unformatted capacities of 3.5” floppy disks were:
SS-DD - 512KB
DS-DD - 1MB
HD - 2MB
ED - 4MB
LS (floptical) - 21MB
Technically you could format some of the lower density media in the high density drives and get the expanded capacity (although you may have needed to modify the media a little - holepunch to make an HD drive see a DS-DD disc as “HD”), although it wasn’t always very reliable and depended on the physical media and the capabilities of the individual drives.
Different file systems used the 2*80 tracks differently, hence the different formatted capacity, DOS usually had the lowest, Macintosh in the middle, Amiga had the most (although the Amiga HD floppies were a bit of a cludge - the drive spun at half speed due to a limitation of the Amiga floppy controller, which was also the reason you couldn’t just use a “PC” HD floppy in an Amiga without modification).
Same with older floppy disk formats. Using FAT16 (or FAT12 on some systems) you can often format DD 3.5" disks to 830K instead of the usual 720K. On the Amiga the same disks are usually 880K.
My favorite example of this is using "aux cable" to refer to an audio cable with a 3 or 4 pin 3.5mm connector on the end (because car stereos would have a 3.5mm jack labeled "Aux" for "Auxiliary input")
I usually call those "headphone cables" just to be contrary.
Not connector related, but I can't tell you how many people use time zones like PST year-round. The ST stands for "standard time," meaning not Daylight Saving Time. Right now, PDT would be appropriate.
The thing that kills me is that they could just say "PT" or "Pacific time" and be right, with less effort.
I always know what they mean, but it's wrong for more than half the year.
composite video - RS-170 - monochrome video - EIA-170 - NTSC - black and white video - CVBS - B&W video - RS-170A - analog video - PAL - yellow RCA plug - just plain "video"
These don't even all refer to the same thing, and some are definitely more correct than others, but all are used even by technical people.
Here's another one: "Amphenol connector", "Cannon connector" or "Molex connector". It's the same as saying "Ford car".