What is a TTL signal?

Answer

A TTL signal is a Transistor-Transistor Logic compatible signal. The TTL standard or signal is single-ended, meaning that each signal is comprised of a voltage on one wire. Standard TTL circuits function at a power supply of 5 volts.
Q&A Related to "What is a TTL signal?"
When the photographer presses the shutter with the flash in TTL mode, the light that comes from the flash bounces off the subject and returns through the lens, where it is metered
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Answer "TTL" stands for "Transistor to Transistor Logic". It's a very low current level communication protocol, typically used for very short distances. It also
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Transistor-Transistor Logic; a fast, reasonable-cost type of integrated circuit used in some
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