Micro-controllers
What is an Analog? Check all that apply.
-A continuous voltage -A number -Anything that is not digital
A DIP should be placed on the breadboard with the marker to the left because:
-Dr. C says so -to be consistent -identifying the pins is always done the same way 1 to... starting under the marker and counting counter clock wise
The 4pin ultrasonic sensor has the following pins:
-Vcc -trig -Gnd -Echo
When soldering, the heat transfer is increased by
-by using line contact -by insuring that both the wire and the iron are coated in liquid solder
A typical voltmeter can measure:
-hfe -continuity -resistance -current -diodes -voltage -AC and DC
In this class we assume that the forward voltage drop across a silicon diode is ______ Volts.
0.7
Each push of a toggle sets fTog true how many iteration of the loop method?
1
How many bits are needed to represent a 10 digit binary number?
10
The Arduino analog input has a range of zero to ___________.
1023
convert gray code 1011 to binary
1101
How many boolean variables do you need to implement a toggle (in this class)?
3
int i='3'; in c++ will generate the value
3
There are ___ bits in a byte.
8
What is Analog? Check all that apply.
A number Anything that is not digital A continuous voltage
A pot is normally connected to what type of Arduino I/O?
Analog input
Total _____ in a parallel circuit is equal to the sum of the individual branch _______.
Answers 1 and 3
Which pins can be used with the input pull-up?
Any digital pin
Where does the power dissipated by an LED go?
Both heat and light
Analog outputs are available on which Arduino Uno Pins?
Digital pins 3, 5, 6, 9, 10, 11 Pins marked with "˜"
A conductor consisting of multiple wires connected together can have multiple voltages.
False
A toggle flips (t to f, or f to t) when the button is true and it was true on the previous scan.
False
An Active Low Output must source current.
False
Atoms in a conductor have electrons that are tightly bound.
False
Energy is the rate of power transfer.
False
False is
False
Glass is a great conductor.
False
In a DC motor torque is inversely proportional to armature current.
False
Silicon is a good conductor.
False
The Baud rate is the rate at which data bits are transmitted
False
Using the tip of iron provides the best heat transfer.
False
When a relay is deenergized a NO contact will pass power.
False
true ^ !false is
False
Setting an input to input pullup changes the __________ register/s.
PUD and DDR
Pot is short for what?
Potentiometer
PUD stands for?
Pull-up Disable
If you want the ISR to run when a button is pushed (using an external pull down resistor) use the following mode:
RISING
Serial communications with Arduino can be accessed through the ______ class. (must be spelled and capitalized correctly.)
Serial
Use the following method to print data and then move to a new line.
Serial.println()
In a _________ circuit, all components are connected end-to-end, forming a single path for electrons to flow.
Series
A Joule is a Watt·Sec
True
A circuit is an unbroken loop of conductive material that allows electrons to flow through continuously without beginning or end.
True
A servo contains a closed loop feeback conrol.
True
A toggle requires memory of the buttons previous state.
True
All points on a conductor have the same voltage
True
Most servos use Red for +5V.
True
When a relay is deenergized a NC contact will pass power
True
How do you view serial data in the Arduino IDE?
Use the serial monitor
To output to a servo _________.
Use the servo class .write method
The value 0x61 represents which character?
a
A reed switch consists of :
a glass envelope a single contact pair
RS-232C is
a standard for serial communications
The ISR is specified
by namein the attachInterrupt method
To turn a relay on apply rated voltage to the ________.
coil
The electrical intensity or "pressure" developed by a source of electrical energy such as a battery or generator is:
electromotive force
In normal circuits electrical current is the flow of _________.
electrons
The number of PN junctions in an NPN transistor is different than a PNP transistor
false
false || false is
false
This is the type of diode bias when a cathode is made negative and an anode is positive.
forward
According to Ohms law when the voltage increases and the resistance remain the same what happens to the current?
increases
Which wound field DC motor has the greatest starting torque
series field
Capacitors store energy in the form of:
static charge
If a motor runs backwards you should
swap the motor leads
Why would you place a resistor in series with an LED?
to limit the current through the LED
(true || false) && !false is
true
true&&true is
true
Components such as resistors in a parallel circuit share the same __________.
voltage
