The terabyte is a multiple of the unit byte for digital information. The prefix tera represents the fourth power of 1000, and means 1012 in the International System of Units (SI), and therefore one terabyte is one trillion (short scale) bytes. The unit symbol for the terabyte is TB.
1 TB = 1000000000000bytes = 1012bytes = 1000gigabytes.
A related unit, the tebibyte (TiB), using a binary prefix, is equal to 10244 bytes. One terabyte is about 0.9095 TiB. Despite the introduction of these standardized binary prefixes, the terabyte is still also commonly used in some computer operating systems, primarily Microsoft Windows, to denote 1099511627776 (10244 or 240) bytes for disk drive capacity.
Early if not first usage of terabyte in selected production products:
How have you been, nice to see you again
How quickly these conversations seem to end
You meet a friend, every now and then
How quickly these relations turn into trends
Put all your walls up and open your windows
And close all your doors
You catch yourself standing in front of the mirror
And now you need more
What do you wish for
To catch you as you're falling
So easy to ignore
But now you hear it calling again
I wouldn't want to be you
This lonely game that you play
Between your walls you confuse
Every heart that you break
So afraid that you'll lose
Always a void to replace
I wouldn't want to play you
You try and pretend, the truth is hard to bend
How easy these translations can be read
What if you were led to play a different game instead
How hard these frustrations are to mend
Does it matter to you?