Introduction to Robotics/Electrical Components/Assignment/Students: Difference between revisions
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== Reading == | |||
*Read [[wikibooks:Circuit Theory/Resistors|Circuit Theory: Resistors]] | |||
*Read [[Wikibooks:PBASIC Programming/Input and Output|PBASIC Programming: Input and Output]] | |||
== Questions == | |||
== | === Ohm's Law === | ||
#A computer serial port cable has a few requirements: the signal is 5 volts, and the total current flowing into the port can be up to 2 milliamps. If the current is too high, the circuit will be ruined. How much resistance must a serial cable have at 5 volts to keep the current below 2 milliamps? | |||
#If we have a circuit with a set resistance ''R'', we want to change the voltage and measure the current. Which of the following shapes is our graph likely to have: | |||
##Parabola | |||
##Hyperbola | |||
##Line | |||
##Sine Wave | |||
=== Resistors === | |||
You have the following resistor color codes, what resistance do these correspond to? | You have the following resistor color codes, what resistance do these correspond to? | ||
{| | |||
|- | |||
| | |||
:1. | |||
|{{Introduction to Robotics/Resistor|brown|black|brown}} | |||
|- | |||
| | |||
:2. | |||
|{{Introduction to Robotics/Resistor|orange|orange|red}} | |||
|- | |||
| | |||
:3. | |||
|{{Introduction to Robotics/Resistor|brown|black|yellow}} | |||
|- | |||
| | |||
:4. | |||
|{{Introduction to Robotics/Resistor|green|green|blue}} | |||
|} | |||
=== Ports === | |||
# | #We have a sensor that outputs values between 0 and 116. How many parallel input ports do we need? | ||
# | #If we have the statement "DIRS = %1100110101001110", what ports are inputs, and what ports are outputs? | ||