TTL Signal and Analog Waveform

[Helen]

Hi there

I wonder what's the difference between them?
I know TTL is that transitor transistor level
however, what's the exact difference for them?

Thanks a lot!

[Fabien Palencia]

the TTL is 0 or 1, a binary respond 0Volt or 5 Volt, is use open or close
relay or on/off a Led

a Analog Waveform is a discret signal with more value if you use a
- 8 bit card you are 256 value into the interval 0 to 5 Volt
- 12 bit 4096
- 16 bit 65535
- 24 bit 16.7 millions ....
is 2^n with n is number of bit
a analog Waveform is is to generate a sinusoidal signal or acquired a
signal from sensor pressure or temperature or position...


"Helen" a écrit dans le message de news:
ba3374ff.0210272102.29b0031f@posting.google.com...
> Hi there
>
> I wonder what's the difference between them?
> I know TTL is that transitor transistor level
> however, what's the exact difference for them?
>
> Thanks a lot!

[Les Hammer]

junciu@yahoo.com (Helen) wrote in message news:...
> Hi there
>
> I wonder what's the difference between them?
> I know TTL is that transitor transistor level
> however, what's the exact difference for them?

TTL is digital - anything less than 0.8 volts means "0",
anything above 2.4 volts means "1". You don't care
about anything else - just 0 or 1.

Analog can be anything and you care about all of the
signal. This is what drives the speakers in your stereo.

Les