hello xda,
i was lokking to buy some nfc tags and was looking at a chart at http://rapidnfc.com/which_nfc_chip
and it seens like the NTAG216 is way better than the NTAG213, but i see more people on amazon buy the 213 more than the 216.
which would be better?
any diffrences other than the memory?
Figured it out. Ntag213 has bout 123 bytes of data. Ntag216 has bout 888 bytes.
I went with the 216. The only difference is memory. Hit thanks if this helped anyone!
Phurkus said:
Figured it out. Ntag213 has bout 123 bytes of data. Ntag216 has bout 888 bytes.
I went with the 216. The only difference is memory. Hit thanks if this helped anyone!
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I confirm: the only difference between Ntag213 and Ntag216 is memory.
Ntag213 has 144 bytes available, while Ntag216 has 888 bytes.
Both chips support password-protection, scan counter and UID ASCII mirroring.
Related
Can someone figure out, on the LATEST FIRMWARE, how many mb out of 1024 are actually usable by the system?
Quadrant>system info is a good place to check.
iconia has 745 (really good imo)
thanks.
The newest firmware 8.2.3.9 has 746100 kb
thepctech said:
The newest firmware 8.2.3.9 has 746100 kb
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thx bro. ASUS WINS BY 2 MB
jcarrz1 said:
thx bro. ASUS WINS BY 2 MB
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Not really, it totally depends on what's running on your tab at the time, it's not a set number. Everything is available it just doesn't show what android itself is using.
We are not talking about free RAM, we're talking about RAM available to the OS. This will be the "big number" in task manager or as Quadrant reports it. Useful to know because different devices can have the same amount of physical RAM installed but various amounts reserved for GPU, camera etc.
Also, 746100 kb = 728MB RAM. Less than Acer? Strange.
What's the total ram size for the sensation i thought it was supposed to be 700+ mb right ? but mine is showing 558mb ? htc cheat my feeling ! LOL !
OMG how many times are we going to get this same post/thread? 700+ is the total RAM but some of that is allocated to the system, mainly for graphics. Every Android phone I've ever used has had some RAM allocated like this. My G2 with 512 only showed 300something. My Galaxy tab had around 400 of it's 512. I can only guess that people never noticed since the information was never up front and center in their notification area.
This question may sound silly, or stupid (or both, in fact ).
TF should have 1024 MB of RAM onboard. Or maybe 1000, if it's not square Gigabyte. However, application info shows that active services currently own 215 MB, cached processes 322 MB, and free memory (from Elixir) is 277 MB. So the grand total is 814. Also, Elixir shows that I have only 728 MB total...
Where the hell is rest of my (okay, not mine but TF's) memory? Is it some 'restricted' or 'core process dedicated' memory? Or maybe I'm just fooled by software or manufacturer's claims.
Just curious of this little quirk.
Pretty sure its dedicated to/for the GPU.
And the Android core system (The Dalvik VM) uses memory too, and it just doesnt show it to everything else when booted.
A lot of the ram is partitioned for the system use so that's where it is
Sent from my HTC Vision using XDA Premium App
Thanks! Was expecting something like that, just need to be sure.
its being used to run the os
the Dalvik VM, OS and all of that comes out of the 768MB that is allocated, (I think it is actually a little less that 768 cause of the nvmap memory too) 256MB of ram is dedicated to the ULP GeForce, that is where all the ram is
I didn't notice this in my first 16GB Tab, but on the 32GB tab, if I open the Task Manager through the minibar, it shows 775 MB total ram I know we are supposed to have 1GB ram, so I figure the 225MB missing is due to god knows what, that's not an issue.
If you go to Settings, Applications, Running Applications, it shows you have only 512 MB ram......the real question is, which one is it?
I also noticed that in the 16gb, but ignored it since the usage of ram in the ram manager exceeds 512mb. What's bothering me is why do the usage of ram differ between the ram manager and the one in running applications.
This was the first thing I noticed when I turned on my 7.0 plus for the first time when I got it on Christmas day. I just disregarded it but I am happy I am not the only one who is curious as to why it is saying 775 MB of ram.
If you take a look at /proc/meminfo you can see the kernel only recognizes 775 MB of memory. Guess that explains why it felt like apps were closing more frequently than on my 1 GB phone.
Question is, why are we getting less than memory than was advertised?
On mine:
Code:
# cat /proc/meminfo
MemTotal: 794900 kB
We are getting all the memory "adverstised", but you have to remember that things like the kernel itself and certain other things take memory before hand. The same thing happens on android phones.
Well wouldn't that still show it as being "used" so to speak out of the total 1GB or 1024 MB? Or does the kernal just allocate itself and then let everything else take over from there?
Zadeis said:
Well wouldn't that still show it as being "used" so to speak out of the total 1GB or 1024 MB? Or does the kernal just allocate itself and then let everything else take over from there?
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I honestly don't remember. I wouldn't be concerned, however, about the lower number. It's perfectly normal on the few android devices I have.
garyd9 said:
I honestly don't remember. I wouldn't be concerned, however, about the lower number. It's perfectly normal on the few android devices I have.
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could it be that some of the ram preserved for the GPU?
dewadewi said:
could it be that some of the ram preserved for the GPU?
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Ah... Never thought of that, but at the same time (IMHO) I think it's unlikely it would use THAT much.
Though I guess if other android devices do it according to garyd it's nothing we should worry about.
dewadewi said:
could it be that some of the ram preserved for the GPU?
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I believe it's RAM reserved for GPU and a few other things, like the Samsung MFC and camera interface.
On Captivate, some of the "speedmod" kernels changed the reserved memory sizes to free up user RAM - but often reducing the reserved memory can break stuff. (For example, trying to port those changes to Infuse caused the camera to stop working, along with video decoding acceleration.)
Zadeis said:
Well wouldn't that still show it as being "used" so to speak out of the total 1GB or 1024 MB? Or does the kernal just allocate itself and then let everything else take over from there?
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Keep in mind this is the Linux kernel plus android.
In this case the system shows how much memory is available after the Linux kernel and android overlay are loaded. the galaxy 7 plus has 1GB of ram.
Now if this was straight Linux without android you would see the full amount of ram listed.
I recently bought a 16gb SD card and its only showing 14 gigs. I know when you buy an sd card you won't get all of the space, but I've never bought one with 2 gigs missing. I was wondering if there was any way to get the full capacity?
Sent from my SGH-T769 using xda app-developers app
If your phone is reporting 14.8 gb, then you have your "16gb" because that is about 16 billion bytes.
Sent from my Polaroid Tablet using Tapatalk 2
tronmech said:
If your phone is reporting 14.8 gb, then you have your "16gb" because that is about 16 billion bytes.
Sent from my Polaroid Tablet using Tapatalk 2
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I don't follow, it says total capacity for the SD card is 14.8 gb. Shouldn't it be 16 or at least high 15's?
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my 32 gig card shows as 27.1 gig...
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Take it easy, man !
1024KB = 1MB, and 1024MB = 1Gb.
Thinking again, 16Gb = 1024MB x 16 = 16384MB, but it's very odd, and the manufacturer don't want odd, so the manufacturer decided like this: 1000MB = 1Gb ( 16Gb = 16000MB ) and thus will lead to a lack of numbers ( when the true is "16gb = 16384MB" )
If your phone is reporting 14.8GB, just because your phone ( and every smartphone, HDD, USB, etc. ) memory is calculated by the Manufacturer ( Kingston, SeaGate, etc. ), and by Byte units. Don't worry man.
standards were set back in the day (when the loss was negligible). When working with kilobyte size hard drives. for instance, a 5 KB drive back then was actually just 5000 bytes. which, in reality is 4.88 KB (only a loss of 122 bytes, no biggie, right?)
in today's standard, its still measured the same way. a gigabyte is measured as 1,000,000,000 bytes (equaling 0.93 GB). literally, a gigabyte drive SHOULD be 1,073,741,824 bytes.
So, lets look at you 16 GB sd card... by industry standards, its actually 16,000,000,000 bytes. which is 15,625,000 KB, which is 15,258.79 MB, which is 14.9 GB (take 16,000,000,000, divide by 1024, divide that by 1024, and divide that by 1024).
Long story short, literal KB is 1024 bytes and they're being meausred as 1000 bytes. you're losing 24 bytes for every kilobyte
BIBUBO BCJ said:
Take it easy, man !
1024KB = 1MB, and 1024MB = 1Gb.
Thinking again, 16Gb = 1024MB x 16 = 16384MB, but it's very odd, and the manufacturer don't want odd, so the manufacturer decided like this: 1000MB = 1Gb ( 16Gb = 16000MB ) and thus will lead to a lack of numbers ( when the true is "16gb = 16384MB" )
If your phone is reporting 14.8GB, just because your phone ( and every smartphone, HDD, USB, etc. ) memory is calculated by the Manufacturer ( Kingston, SeaGate, etc. ), and by Byte units. Don't worry man.
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I get it it now. Thanks! I was pretty confused lol
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