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Computer Nerd Acronyms Quiz #1

Guess what the UNDERLINED letter in these acronyms and initialisms stands for.
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Quizmaster
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Last updated: February 3, 2026
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First submittedDecember 29, 2012
Times taken155,156
Average score50.0%
Rating4.75
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Acronym
Answer
AI
Artificial Intelligence
RAM
Random Access Memory
ROM
Read-only Memory
LLM
Large Language Model
LED
Light-emitting Diode
CPU
Central Processing Unit
GUI
Graphical User Interface
SQL
Structured Query Language
RGB
Red Green Blue
API
Application Programming Interface
SaaS
Software as a Service
Acronym
Answer
HTML
Hypertext Markup Language
IRC
Internet Relay Chat
LAN
Local Area Network
OS
Operating System
SSL
Secure Sockets Layer
USB
Universal Serial Bus
VR
Virtual Reality
ISP
Internet Service Provider
CRT
Cathode Ray Tube
GNU
GNU's Not Unix
DOM
Document Object Model
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73 Comments
Nards
+14
Level 88
Aug 1, 2010
I can see why most of these are nerd acronyms, but I don't think LED fits into that category. I think thats a term very many people know by now as those are used pretty often by now.
YamatoFans
+36
Level 73
Apr 14, 2015
Lots of people have used the term, but don't know what it stands for. I was surprised recently talking with someone that he didn't know what it meant. That said, it's good to have an easy one to start the quiz.
tom88
+8
Level 77
Jul 8, 2019
also doesn't have a lot to do with computers. Sure it's an electronic component, but it's not like they are only used in computers and a computer can work just fine without LEDs. transistors on the other hand are pretty important to building a computer.
GeckoIX
+23
Level 47
Apr 24, 2011
I recognised alot of these Acronyms but then realised I didn't know what they stood for
ctleng76
+10
Level 65
Jun 2, 2011
How is it that the definition for GNU also contains the same acronym "GNU"? What does it stand for?
ctrlaltdisease
+32
Level 57
Jan 30, 2019
It stands for GNU's not Unix.
martay
+26
Level 69
Mar 3, 2019
It's GNU's all the way down!
ILikeQuizes
+16
Level 61
Oct 1, 2019
https://en.wikipedia.org/wiki/Recursive_acronym
HyalineSkies
+2
Level 48
Dec 8, 2025
The GNU paradox 🤔
mal
+6
Level 64
Aug 24, 2011
Not really bothered that I didn't know many of these, in theory it means I am not a nerd!!!
swagjunction21
+12
Level 25
Jan 10, 2012
another recursive is Bing = Bing is not Google
Freestatebear
+10
Level 88
Jun 8, 2016
It's probably also a backronym, although Microsoft has never confirmed or denied that aspect of the "bing" etymology.
TheDenchMan
+2
Level 64
Jan 26, 2026
I heard it's "Because It's Not Google"
jmaddog
+2
Level 33
Dec 29, 2012
Is a Cathode Ray Tube a real computer term?
plattitude
+7
Level 94
Feb 22, 2013
Yep, up until the early 2000s most computer monitors were CRTs, before the flat-panel LCDs became cheaper and freed up all that room on our desks.
kleiner
+9
Level 56
Dec 7, 2017
Oh my, only a few things can make me fell that old than seeing such question made five year ago...
HyalineSkies
+2
Level 48
Dec 8, 2025
Boy do I have some news for you
misu
+2
Level 3
Mar 1, 2013
hey! when i was 3,i used the internet
soda15
+2
Level 17
Mar 30, 2013
thank you computer class!! :D
cranbeckh
+15
Level 69
Jun 12, 2013
My favorite geek acronym is PEBKAC: Problem Exists Between Keyboard And Chair.
ddddan
+7
Level 85
Apr 7, 2021
Closely related:

PICNIC: Problem In Chair, Not In Computer

smartcookie17
+2
Level 44
Jun 20, 2014
All with 1:52! I really am a nerd.
zuni
+2
Level 32
Apr 16, 2015
These were easy...taught in school itself... got all except one....
petronomicon
+3
Level 32
Feb 4, 2016
nerds make the world go round.
thatguycalumb
+5
Level 50
Feb 17, 2016
Would you consider adding HTTP and OOP?
AllenY
+2
Level 68
Feb 26, 2016
Woah, what? What's with all the newbies in the comments? Not that it's a problem, but I'm surprised...
worm
+3
Level 63
Feb 26, 2016
LED and CRT are a bit iffy, having usage much wider than computers, but they are at least connected with the field.
stubart409
+4
Level 69
Feb 26, 2016
Very disappointed that RTFM is not here. Roy in the IT Crowd even wears a shirt with RTFM printed on the front. I could write what it stands for, for those of you that don't know, but I might be called before the Committee.
ponnuki
+5
Level 57
Mar 10, 2016
OS can also mean Open Source
Ponderosa
+2
Level 89
Mar 15, 2016
So the G in GNU stands for "GNU"? What does that G stand for?
ponnuki
+5
Level 57
Mar 24, 2016
GNU. It's gnus all the way down.
JonOfKent
+1
Level 61
Feb 4, 2026
Like PINE (PINE is not ELM)

Can't remember what ELM stands for though

Grafakos
+2
Level 34
Jun 13, 2016
Got all of these except DOM, which I've never heard of.
Findlay
+2
Level 80
Sep 4, 2016
Well that went badly.
DrIlluminati123
+2
Level 33
Aug 24, 2017
Wondering why I don't know many of these terms although I have been in front of a computer for years.
PickleChicken
+3
Level 42
Nov 27, 2017
Put in CD and VCR
tom88
+2
Level 77
Feb 12, 2020
VCR is definitely not a computer acronym
BlackLab
+2
Level 66
Mar 3, 2019
I am surprised at how many people got DOM incorrect.
stubart409
+2
Level 69
Mar 13, 2019
In the '90's and early 2000's there used to be a thing called a PCMCIA card, which was an interface for peripherals on early laptops. It was developed by the Personal Computer Memory Card International Association. Since there are so many computer acronyms to learn, someone came up with an alternative acronym for PCMCIA -- People Can't Memorize Computer Industry Acronyms.
magnet0
+5
Level 55
Nov 25, 2019
TWAIN = Technology Without An Interesting Name
11level360
+2
Level 51
Apr 23, 2020
Oof only 20 but im only 10 yrs old (well i do take python and html classes)
Nevson64
+1
Level 67
Feb 17, 2026
You must be a legend
Skymatone
+2
Level 59
May 10, 2020
GNU one of my favorite examples of Recursion
Tomtrific
+2
Level 80
Jul 2, 2020
I got three and I'm proud of it.
thegoatisgoaty
+2
Level 75
Mar 20, 2021
I got 4, I know lots about maths and sciences but absolutely nothing about computers.
NV1
+3
Level 55
Mar 21, 2021
What about Cascading Stylesheets? (CSS)
Damangio
+2
Level 64
Mar 22, 2021
100%. I guess I'm in the right field.
Quizbyquiz
+1
Level 43
May 20, 2023
Personally, I don't think AI is a "nerd" acronym, I know tons of people who know what it stands for. I think it should be removed in my opinion.

Great Quiz!

Watpo54
+4
Level 61
Oct 4, 2023
Maybe before the AI boom it was considered a nerd acronym.
Watpo54
+1
Level 61
Oct 4, 2023
Got 29 and I'm disappointed about it.
Hozi
+1
Level 78
Feb 18, 2024
I thought VR stands for Valtion Rautatiet (State Railways in Finland). Xd
amgine
+2
Level 67
Feb 16, 2025
The only acronyms here are RAM, ROM and LAN. The rest are initialisms.
Dollyfroggy
+1
Level 63
Feb 16, 2025
I've heard GUI as an acronym, but I agree for the rest.
gsharpthegreat
+1
Level 40
Mar 16, 2025
I consider LED to be an acronym
Djilas
+1
Level 86
Feb 3, 2026
Both meanings have been used for decades.
RobNobody
+2
Level 80
Feb 4, 2026
GNU is also a proper acronym, pronounced "gnoo," or like the word "new" with a hard g in front of it.
BillShep1230
+1
Level 78
Sep 6, 2025
Oh geez. 25 right. Now I know why IT sighs when I call them.
EvanAviator
+1
Level 61
Sep 16, 2025
I am shocked at how low CRT is- even as a person born in the 2000s I thought that was a given
TheModder
+4
Level 67
Feb 3, 2026
Bro, why did you update it, it was so good before.
TheModder
+3
Level 67
Feb 3, 2026
It isn’t fun any more…
Quizmaster
+1
Level ∞
Feb 3, 2026
Way better now, IMO.
cosenza
+2
Level 69
Feb 3, 2026
I don't think so
TheModder
+4
Level 67
Feb 3, 2026
Idk, this requires one to know what exactly that letter means, wherein the original, if you got one of them correct it may jog your memory, and help you continue. It also meant you had to know the whole acronym
Aoto327
+1
Level 87
Feb 3, 2026
22/22, 100%
TheModder
+2
Level 67
Feb 3, 2026
Though, I would suggest that you should get mod team, one that goes around and fixes small issues with quizzes. Sorry, this is unrelated, but I know you will be looking here.
loganite
+2
Level 93
Feb 3, 2026
Why did you underline the M?!?! It's the only letter I didn't know in HTML!!! ;)
JonOfKent
+1
Level 61
Feb 4, 2026
I was surprised IRC was so low, until it occurred to me you probably need to have been a geek born in a fairly narrow window to have used it
JonOfKent
+1
Level 61
Feb 4, 2026
I was surprised IRC was so low, until it occurred to me you probably need to have been a geek born in a fairly narrow window to have used it

#teletubbies

Koopa
+1
Level 88
Feb 6, 2026
CRT threw me, even though I'm familiar with the acronym (I still have one). I was unaware it was a computer term.
TobiW
+1
Level 49
Mar 19, 2026
My inputs for some of them were not recognized, even though they were very much correct. LED for example wouldnt register "light emitting diode" or "light-emitting diode"

Maybe its a case thing but that kinda threw me off, same for GUI

Albrik
+1
Level 66
Mar 19, 2026
You have to say only the underlined letter
grouchypanda
+1
Level 39
Mar 19, 2026
This was lots of fun!
KanishkGGo
+1
Level 41
Apr 11, 2026
4/22
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