1. Actuators and acting
electrical signal
digital signal

3. goForward(50) car drives forward Open loop control digital quantity,
e.g. power %
analog quantity,
e.g. pulse train
response
control program
interface
actuator
Open loop control

4. NXT Actuator
RJ12 connector
6 wire cable
RCX Actuators
2x2 plate connector
2 wire cable

5. LED For Dummies

7. GIO general input/output
ground V+

8. V+
ground

9. A relay is an electrical switch that opens
and closes under the control of another electrical circuit

16. Differential Drive

17. Forward
Backward

19. Instantaneous Center of Curvature

28. analog quantity,
e.g. light
digital quantity,
e.g. light %
stimuli
sensor
interface
control program
response
control program
interface
actuator
digital quantity,
e.g. power %
analog quantity,
e.g. pulse train

29. Embedded Java The leJOS API classes provide access to the
hardware. Especially the output ports
and actuators:
MotorPort
Motor
DifferentialPilot