Friday, February 25, 2011

activity 3.1.1 inputs and outputs


1. Examine the wire diagram on the mini switch and describe how the diagram relates to the concepts of normally open and normally closed.


2. If computers only understand digital signals, then how is a computer able to interpret the analog signals coming from the interface?

3. Why does resistance decrease as the NTC Resistor becomes warmer?

Mini Switch:
-when plugged into 1 and 3 and not pressing button:
unchecked
at zero
not present
-when in 1 and 3 and pressed
checked
at one
present
-when plugged into 1 and 2 everything is flip-flopped

Potentiometer:
-range: 38-4945

NTC Resistor:
-1668
-while warm was at 1318

Motor:
-one way to change the direction of spin is by switching the wire ports

Electromagnet:
When reed switch is touched the box becomes checked

Photo transistor:
-closer light gets the number goes down
this information is jacksons
 

No comments:

Post a Comment