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Text Group

A text group is a kind of newsgroup -- an interactive online discussion group –- that typically communicates via text only. (The other basic category of newsgroup is a binary group, which incorporates graphics and non-text media into the discussion).

Trojan Horse

In computing, a Trojan Horse is a malicious software program that is typically transmitted via the Internet or a network. It can damage or destroy an infected personal computer. Like the Trojan Horse of Greek mythology, it infiltrates by attaching itself, unseen, to a harmless software program. Software is available to protect against Trojan Horses. A Trojan Horse is a form of malware (from the words "malicious" and "software"). Other forms of malware include computer viruses, worms, zombies and spyware.

Terabyte (TB)

A unit of measure for a chunk of data totaling about 1 trillion bytes (1, 099,511,627,776 bytes, or 2 to the 40th power, to be exact, because bytes are calculated as binary numbers, based on the number 2). Computers with the capacity to hold terabytes of data are a more recent addition to the market but are gaining popularity. The following table shows standard measures of data based on bytes:

Term Abbreviation Approximate Value Precise Binary Value
Byte B 8 bits  
Kilobyte K or KB 1,000 bytes 1,024 bytes or 2 to the 10th power
Megabyte M or MB 1 million bytes 1,048,576 bytes or 2 to the 20th power
Gigabyte G or GB 1 billion bytes 1,073,741,824 bytes or 2 to the 30th power
Terabyte TB 1 trillion bytes 1,099,511,627,776 bytes or 2 to the 40th power


Transmission Control Protocol (TCP)

The computing communications technology used along with Internet Protocol (IP) to transmit information over the Internet. TCP is capable of streaming data, while IP divides it into chunks called packets.

Teletype Network (Telnet)

A software program that runs on your computer and connects you to a server (a computer that "serves" other computers) on a network (a group of linked computers). You type in commands on your computer through the Telnet program, which then executes them as if you were entering them directly on the server. This enables you to control the server and communicate with other servers (and computers) on the network. You must have a valid username and password to start a Telnet session.