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Computer Knowledge information pages for terms starting with the letter T.

T1 - T-One

(tee-one) A leased line carrying 1.544 Mbps DS1-formatted digital data (often used for Internet connections). T1 lines are generally unshielded twisted pair wires (two pairs are required: one for outgoing traffic and one for incoming traffic). Tra...

T3 - T-Three

(tee-three) A leased line carrying 44.736 Mbps DS3-formatted digital data (often Internet connections).

TA - Terminal Adapter

(T-A) Networking hardware that connects an ISDN Basic Rate Interface to computer equipment. A TA is sometimes called an ISDN modem because it serves that purpose just as a regular modem connects a phone line to your computer.

TANSTAAFL - There Ain't No Such Thing As A Free Lunch

(tan-stah-full) An acronym typically used as part of a message or newsgroup posting. This particular one originates from Robert Heinlein's classic science fiction novel The Moon is a Harsh Mistress. Outside the computer area TINSTAAFL (There Is No...

TAPI - Telephony Application Programming Interface

(tappy) A Windows interface that allows the programmer to more easily write telephone-based applications (e.g., fax) while letting Windows do most of the work actually controlling the hardware.

TCP/IP - Transmission (Transport) Control Protocol/Internet Protocol

(T-C-P-I-P) A communication protocol used to ease communication between computers over a network. TCP/IP is the primary protocol used on the Internet (TCP/IP is really a suite of protocols). You will also often see "TCP/IP" address (or just IP add...

TDM - Time Division Multiplexing

(T-D-M) TDM transmits fixed time sequences into which data streams are inserted by giving each stream different time slots.

TDMA - Time Division Multiple Access

(T-D-M-A) Digital phone technology able to transmit multiple voice circuits per channel based on time sharing.

TFT - Thin Film Transistor

(T-F-T) An LCD flat-panel display, often called active-matrix. Each pixel is individually controlled by one or more transistors. This accounts for the excellent resolution of a TFT display, and its higher cost.

TFTP - Trivial File Transfer Protocol

(T-F-T-P) A simplified version of FTP.

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