Question $1$

$1\mathrm{.}1\_\_\_\_\_\_\_\_\_\_$are electronic components that have a specific, never$-$changing electrical resistance $[2$ Marks$]$

A$.$ Pins

B$.$ Resistors

C$.$ Motors

D$.$ None of the above

$1\mathrm{.}2$ If a number is stored in a string variable, this will convert it to an integer, which can be used in math equations. $[2$ Marks$]$

A$.$ string$\_$name.toInt$()$;

B$.$ name.ParseInt$()$;

C$.$ string$\_$name.toInt$64()$;

D$.123$name.ConvertToInt$()$;

$1\mathrm{.}3\_\_\_\_\_\_\_\_\_$ is a standard for character encoding, formalized in the $1960$s$,$ that assigns numbers to characters. $[2$ Marks$]$

A$.$ ASCCII

B$.$ ASSCI

C$.$ ASCII

D$.$ ADSCI

$1\mathrm{.}4$ This command checks how many bytes of data are being sent to the RedBoard. $[2$ Marks$]$

A$.$ Serial.available$()$;

B$.$ Board.available$()$;

C$.$ Serial.bytes$()$;

D$.$ Board.bytes$()$;

$1\mathrm{.}5$ This is where you provide power for the motors $(2\mathrm{.}2$V to $13\mathrm{.}5$V$).[2$ Marks$]$

A$.$ Motor

B$.$ Motor Voltage

C$.$ Logic Voltage

D$.$ Logic

$1\mathrm{.}6$ This is the voltage to power the chip and talk to the microcontroller $(2\mathrm{.}7$V to $5\mathrm{.}5$V$).[2$ Marks$]$

A$.$ Motor

B$.$ Motor Voltage

C$.$ Logic Voltage

D$.$ Logic

$1\mathrm{.}7$ Allows the H$-$bridges to work when high $($has a pull$-$down resistor, so it must actively be pulled high$).[2$ Marks$]$

A$.$ Voltage

B$.$ Resister

C$.$ Standby

D$.$ None of the above

$1\mathrm{.}8$ Collection of electronic components $$ resistors, transistors, capacitors, etc. $[2$ Marks$]$

A$.$ Collection

B$.$ Combined Circuit

C$.$ Fixed Circuit

D$.$ Integrated Circuit

$1\mathrm{.}9$ Components that control the open$-$ness or closed$-$ness of an electric circuit. $[2$ Marks$]$

A$.$ Switches

B$.$ Motors

C$.$ Circuits

D$.$ Resisters

$1\mathrm{.}10$ This function takes a set of numbers and generates a pseudo$-$random number from that set. $[2$ Marks$]$

A$.$ random$($min$,$ max$)$;

B$.$ random$()$;

C$.$ generate$($random$)$;

D$.$ generate$()$;

$1\mathrm{.}11$ This math function rounds a number up or down to the nearest whole number. $[2$ Marks$]$

A$.$ round$($value$\_$to$\_$round$)$;

B$.$ random$()$;

C$.$ generate$($random$)$;

D$.$ generate$()$;

$1\mathrm{.}12$ A variable that $$points$$ to the value contained in a certain address in memory. $[2$ Marks$]$

A$.$ Point

B$.$ Pointers

C$.$ POPE

D$.$ PointValue

$1\mathrm{.}13$ Used to print words and even sentences to an LCD or the Serial Monitor. $[2$ Marks$]$

A$.$ Print

B$.$ Length$()$

C$.$ Wording$()$

D$.$ Strings

$1\mathrm{.}14$ Process used in order to achieve a desired result. $[2$ Marks$]$

A$.$ Rule

B$.$ Syntax

C$.$ Procedure

D$.$ Algorithm

$1\mathrm{.}15$ This method clears all the pixels on the display. $[2$ Marks$]$

A$.$ Clear

B$.$ Clear$()$;

C$.$ Clear$($lcd$)$;

D$.$ lcd.clear$()$;

$1\mathrm{.}16$ Includes the LiquidCrystal library in your program. $[2$ Marks$]$

A$.$ #include

B$.$ #include

C$.$ #LiquidCrystal

D$.$ #LiquidCrystal.h$<>$

$1\mathrm{.}17$ Variables that have been marked as $$read$-$only$$ and cannot have their value changed as the program progresses. $[2$

Marks$]$

A$.$ Fixed

B$.$ Constants

C$.$ VariableConst

D$.$ None of the above

$1\mathrm{.}18$ This function tells the distance sensor to send out an ultrasonic wave form, measures the time it takes to bounce back to

the sensor$,$ and then calculates the distance based on the speed of sound. $[2$ Marks$]$

A$.$ getSensor$()$;

B$.$ getSound$()$;

C$.$ getSpeed$()$;

D$.$ getDistance$()$;

$1\mathrm{.}19$ Used to generate servo control signals. $[2$ Marks$]$

A$.$ ServoSignal$()$;

B$.$ Signal$()$;

C$.$ Pulse$-$width Modulation

D$.$ Signal Modulation

$1\mathrm{.}20$ Plays a sequence of tones, turns all of the LEDs on$,$ and then waits for the player to press a button. If a button is pressed,

restarts the game. $[2$ Marks$]$

A$.$ Sequence$()$;

B$.$ loseSequence$()$;

C$.$ restarts$()$;

D$.$ resSequence$()$;

Question $2[20$ Marks$]$

Instructions: $1$ mark for Naming and $1$ mark for description

$2$ Write the following acronyms in full and Explain it main function

$1.$ LCD

$2.$ PWM

$3.$ MHz

$4.$ RFU

$5.$ LED

$6.$ VIN

$7.$ ICS

$8.$ GND

$9.$ STBY

$10.$ VM

Question $3[20$ Marks$]$

$3.$ Draw the ladder rungs to represent:

a$.$ Two switches are normally open and both have to be closed for a motor to operate. $[10]$

b$.$ A light is to come on if there is no input to a sensor$.[10]$