Kann Arduino Nano eine Spannung ausgeben?

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8

hi,

i see myself as newbie to arduino..
so I have trouble to understand function the A0..A7-Pins A0..A7 (26..19)
of NANO !

with Pins D2..D12 (5..15) there is no problem to switch LED's with
digitalWrite(..)

but this does NOT work with the 'Analog'-PINS A0..A7
no difference whether use
analogWrite(25, HIGH),
analogWrite(25, 200.0),
digitalWrite(25, HIGH)
it does nothing !