- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7 - 5
Complex functions represented by rectangu lar box.
Letters can be used inside the rectangle to clarify the
function. A truth table should be included, as close as
possible to the circuit.
14
U6
Schmitt trigger
+-
+
Wired AND connection
Wired OR connection
2
3
Operational amplifier
Voltage source
Current source