Difference between revisions of "TTL"

Revision as of 20:02, 21 January 2008

The acronym TTL can refer to:

Through The Lens: Usually referring to in-camera exposure metering, but also used to differentiate viewfinder designs, autofocus mechanism designs, and other systems on lens-based cameras.

Transistor-Transistor Logic: Electronic camera circuitry, digital electronics, the ability of a device or circuit to be connected directly to the input or output of digital equipment, eliminates the need for interfacing circuitry, TTL signals are usually limited to two states, low and high, and are thus much more limited than analog signals.

Please expand this with examples.  
See definition research from Google define:ttl

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-;TTL = Through The Lens
+The acronym '''TTL''' can refer to:
+;Through The Lens: Usually referring to in-camera [[camera#TTL Metering|exposure metering]], but also used to differentiate [[viewfinder]] designs, [[autofocus]] mechanism designs, and other systems on lens-based cameras.
-:usually referring to in-camera [[camera#TTL_Metering exposure metering]], but also used to differentiate [[viewfinder]] designs, [[auto focus]] mechanism designs, and other systems on lens-based cameras.
-;TTL = Transistor-Transistor Logic
-: electronic camera circuitry, digital electronics, the ability of a device or circuit to be connected directly to the input or output of digital equipment, eliminates the need for interfacing circuitry, TTL signals are usually limited to two states, low and high, and are thus much more limited than [[analog]] signals.
+;Transistor-Transistor Logic: Electronic camera circuitry, digital electronics, the ability of a device or circuit to be connected directly to the input or output of digital equipment, eliminates the need for interfacing circuitry, TTL signals are usually limited to two states, low and high, and are thus much more limited than [[analog]] signals.
   Please expand this with examples.
   See definition research from Google [http://www.google.com/search?source=ig&hl=en&rlz=&q=define%3Attl&btnG=Google+Search define:ttl]