A Terabyte = 1,099,511,627,776 bytes (or approximately one trillion bytes). A terabyte is equivalent to 1,000 gigabytes or 1,000,000 megabytes.
Terminator
Most commonly found in relation to a SCSI chain, this functions to prevent the reflection or echoing of signals that reach the ends of the SCSI bus. Usually terminators are hardware circuits or jumpers.