In electronics TTL stands for Transistor Transistor Logic.
Digital electronics e.g (digital camera), and Analog electronics
Because in ECL logic Transistors doesn't go to saturation region hence saving the recovery time and making this family the faster.
I believe that is resistor transistor technology TTL transistor transistor logic
A digital circuit composed of bipolar junction transistors (BJTs). Widely used in all variety of electronic applications, especially prior to CMOS circuits becoming popular, TTL superseded the earlier RTL (resistor-transistor) and DTL (diode-transistor) logic designs, which used more power. In TTL, transistors are used to both isolate inputs and perform the logic switching. A "TTL" designation on a circuit input or output indicates a digital circuit rather than analog.Read more: transistor-transistor-logic-electronics
Two modern trends in digital electronics: smaller and faster.
The transition time in digital electronics is in the order of nano seconds.
Electronics divides in analogue and digital one. Electronics is a physical branch of electron emission and behavior. Analog and digital are not two kind of electronics.
digital electronics are inherintly more reliable than analog - in terms of information processing.
Demultiplexers are used in digital electronics to get a signal at the input and produce so many at the output.
David L. Wagner has written: 'Digital electronics' -- subject(s): Digital electronics