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Acronym/Abbreviation

bit [b]
bits per second [bps]
calculations per second [cps]
Optical Carrier (OC)
Digital Signal (DS)
Synchronous Transport Signal (STS)
Terminal (T)
Synchronous Optical NETwork/Synchronous Digital Hierarchy (SONET/SDH)
Ethernet [E]
Campus Area Network (CAN)
Home Area Network (HAN)
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Network Attached Storage (NAS)
Personal Area Network (PAN)
Wireless Body Area Network (WBAN)
Storage Area Network (SAN)
Wide Area Network (WAN)
Business-to-Business (B2B)
Business-to-Consumer (B2C)
Business-to-Employee (B2E)
Factory-to-Consumer (F2C)
Vehicle-to-Vehicle (V2V)
Off-the-Shelf (OTS)
FLOPS (or flops or flop/s) is an acronym meaning FLoating point Operations Per Second.
Hz (or hertz) is a measure of frequency per unit of time, or the number of cycles per second.
Flow (or packet flow)[flows per hour] is a sequence of packets from a source computer to a destination, which may be another host, a multicast group, or a broadcast domain.


Computing

teraflop = 1,000,000,000,000 (1012) cps
petaflop = 1,000,000,000,000,000 (1015) cps
exaflop = 1,000,000,000,000,000,000 (1018) cps
TOP 500- Supercomputer Sites


Electrical data rates

T-1 E-1 T-3 E-3 10BaseTX 100BaseTX 1000BaseTX 1GbE 10GbE 100GbE STS-1 STS-3 STS-12 STS-48 DS-0 DS-1 DS-1c DS-2 DS-3 DS-4 DS-5 VDSL
VHDSL
VDSL2 ADSL SDSL A/SDSL UDSL ISDN Firewire
S400
Firewire
S800
Firewire
S1600
Firewire
S3200
Firewire
S6400
USB
1.0
USB
2.0
USB
3.0
FC
SAN
iSCSI SAN HomePlug
1.0
HomePlug
AV
DOCSIS
1.x
DOCSIS
2.0
DOCSIS
3.0
Thunderbolt
1.544Mbps
(24) DS-0's
2.048Mbps 44.736Mbps 34,368Mbps 10Mbps 100Mbps 1000Mbps 1Gbps 10Gbps 100Gbps 51.84Mbps 155.52Mbps 622.08Mbps 2.488Gbps 64Kbps 1.544Mbps
(24) DS-0's
3.152Mbps
(48) DS-0's
6.312Mbps
(96) DS-0's
44.763Mbps
(672) DS-0's
274.176Mbps
(4032) DS-0's
400.352Mbps
(5762) DS-0's
20-50Mbps 50-100Mbps 8Mbps/1Mbps
(download/upload)
2.3Mbps 1.5Mbps 200Mbps 128Kbps 400Mbps
(63_devices)
800Mbps 1.6Gbps 3.2Gbps 6.4Gbps 1.5/12Mbps 480Mbps
(127_devices)
5.0Gbps 2Gbps 1Gbps 14Mbps 200Mbps 38Mbps/9Mbps
(downstream/upstream)
38Mbps/27Mbps
(downstream/upstream)
304Mbps/108Mbps
(downstream/upstream)
10Gbps
(bi-directional)
(7_devices)


Light

Light travels at 186,283 miles per second (300,000 kilometers per second).
A light-year is the distance light travels in a year, about 6 trillion miles (10 trillion kilometers).


Number of IP addresses

IPv4 [32 bit address] = 4,294,967,296 (232)
IPv6 [128 bit address] = 340,282,366,920,938,463,463,374,607,431,768,211,456 (2128) or 3.402824x1038

Optical data rates

OC-1 OC-3 OC-12 OC-24 OC-48 OC-96 OC-192 OC-384 OC-768 OC-1536 OC-3072
51.84Mbps 155.52Mbps
(3) OC-1's,
(1) STS-3
622.08Mbps
(4) OC-3's
1.24416Gbps 2.48832Gbps
(4) OC-12's,
(16) OC-3's,
(48) STS-1's
4.97964Gbps 9.95328Gbps
(4) OC-48's,
(1) 10GbE
19.8912Gbps 39.81312Gbps
(4) OC-192's,
(4) 10GbE's
79.62624Gbps
(1) 100GbE
159.25248Gbps


Time

Second [s] The base unit of time
Minute (1 min = 60 s)
Hour (1 h = 60 min = 3.6 ks)
Julian day (1 d = 24 h = 86.4 ks)
Week (7 d = 604.8 ks)
Julian year (1 a = 365.25 d = 31.5576 Ms)
Decade (10 years/annum)
Century (100 annum = 3.15576 Gs)
Millennium (1 ka = 31.5576 Gs)

Yottasecond [Ys]=(10-24), 1 septillion seconds, is equal to roughly 32 quadrillion years
Zettasecond [Zs]=(10-21), 1 sextillion seconds, is equal to roughly 32 trillion years
Exasecond [Es]=(10-18), 1 quintillion seconds, is equal to 32 billion years
Petasecond [Ps]=(10-15), 1 quadrillion seconds, is equal to about 32 million years
Terasecond [Ts]=(10-12), 1 trillion seconds, or roughly 31,700 years
Gigasecond [Gs]=(10-9), 1 billion seconds, or roughly 31.7 years
Megasecond [Ms]=(10-6), 1 million seconds, or roughly 11.6 days
Kilosecond [ks]=(10-3), 1000 seconds, or 16 minutes, 40 seconds
Hectosecond [hs](10-2), 100 seconds, or 1 minutes, 40 seconds
Decasecond [das](10-1), 10 seconds
      (+) Positive powers (+)
Second [s]=(100)
      (-) Negitive powers (-)
Decisecond [ds}=(10-1)
Centisecond [cs]=(10-2)
Millisecond [ms]=(10-3)
Microsecond [μs]=(10-6)
Nanosecond [ns]=(10-9)
Picosecond [ps]=(10-12)
Femtosecond [fs]=(10-15)
Attosecond [as]=(10-18)
Zeptosecond [zs]=(10-21)
Yoctosecond [ys]=(10-24)
Planck time [tp]=(10-44) Theoretically, this is the smallest time measurement that will ever be possible


Values

bit [b]= is either a "1" or a "0"
nibble= 4 bits
byte= 8 bits
word or wyde= 16 bits
double word or tetrabyte= 32 bits
paragraph/quad word or octabyte= 64 bits
qubit = Quantum Computing equivalent of a bit
qutrit = Quantum Computing equivalent of a trit

Ten (101)
Hundred (102)
Thousand (103)
Million (106)
Billion (109)
Trillion (1012)
Quadrillion (1015)
Quintillion (1018)
Sextillion (1021)
Septillion (1024)
Octillion (1027)
Nonillion (1030)
Decillion (1033)
Undecillion (1036)
Duodecillion (1039)
Tredecillion (1042)
Quat(t)uordecillion (1045)
Quindecillion (1048)
Sexdecillion (1051)
Septendecillion (1054)
Octodecillion (1057)
Novemdecillion (1060)
Vigintillion (1063)
Centillion (10303)

centibyte [CB] = (10-2) byte
decibyte = (10-1) byte
byte (or octet) base [B] = 8 bits (100)
dekabyte [DB] = 10 (101)
hectobyte = 100 (102)
kilobyte [kB] = 1000 (103)
megabyte [MB] = 1,000,000 (106)
gigabyte [GB] = 1,000,000,000 (109)
terabyte [TB] = 1,000,000,000,000 (1012)
petabyte [PB] = 1,000,000,000,000,000 (1015)
exabyte [EB] = 1,000,000,000,000,000,000 (1018)
zettabyte [ZB] = 1,000,000,000,000,000,000,000 (1021)
yottabyte [YB] = 1,000,000,000,000,000,000,000,000 (1024)

kibibyte [KiB] = 1024 (210)
mebibyte [MiB] = 1,048,576 (220)
gibibyte [GiB] = 1,073,741,824 (230)
tebibyte [TiB] = 1,099,511,627,776 (240)
pebibyte [PiB] = 1,125,899,906,842,624 (250)
exbibyte [EiB] = 1,152,921,504,606,846,976 (260)
zebibyte [ZiB] = 1,180,591,620,717,411,303,424 (270)
yobibyte [YiB] = 1,208,925,819,614,629,174,706,176 (280)

Disk File Systems-
btrfs:
exFAT:
ext2:
ext3:
      Maximum File Size: 2TB
      Maximum File System Size: 16TB
ext4:
      Maximum File Size: 16TB
      Maximum File System Size: 1EB
FAT:
FAT12:
FAT16:
FAT32:
      Maximum number of files: 268,435,437
      Maximum file size: 4GB
      Maximum number of files per directory: up to 65,535, or less depending on file names
Files-11:
HFS and HFS+:
HPFS:
ISO 9660:
JFFS2:
JFS:
MFS:
NTFS:
      Maximum number of files: 4,294,967,295
      Maximum file size: 16TB currently (16EB theoretically)
ReiserFS and UDF:
SquashFS:
UBIFS:
UFS:
Veritas File System:
VMFS:
XFS:
      Maximum File Size: 8EB
      Maximum File System Size: 16EB
YAFFS:
ZFS:
      Maximum Number of Files: 256 Quadrillion ZB
      Maximum File Size: 16EB



Wireless data rates

Infrared (IrDA) Bluetooth 802.15.1 Zigbee Z-Wave Wi-Fi 802.11a Wi-Fi 802.11b Wi-Fi 802.11g Wi-Fi 802.11n Wi-Fi 802.11s WiMAX 802.16e WiMAX 2.0 802.16m LTE UWB
802.15.3a
Eye-Fi NFC
13157
9600bps - 4Mbps (2.4GHz)
[720Kbps]
BEDR
[2.1Mbps]
(2.4GHz)
[200Kbps]
(256 nodes)
(908.42MHz)
[9,600bps/40kbps]
(232 devices)
(5.0GHz)
[54Mbps]
(2.4GHz)
[11Mbps]
(2.4GHz)
[54Mbps]
(2.4/5GHz)
[300Mbps]
N/A (10-66GHz)
[2-155Mbps]
(10-66Ghz)
[120Mbits/60 Mbits]
(1.4-20MHz)
[50-100Mbps]
480Mbps 4GB
SD_card
w/Wi-Fi
848kbit/s

United States Frequency Allocation Chart- The Radio Spectrum


Mobile OS's

Android
Blackberry OS
iOS
MeeGo
Linux
Pocket PC
Sailfish OS
Symbian
Ubuntu
WebOS
Windows Mobile
Windows Phone


More to come. . . .



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