1) please solve q 8.103 using mesh analysis and with steps.

-----------------------------------------------------------------------

2.1)Consulting the above figure, what hexadecimal value should I write to theGPIO output port to turn on the left-most LED, and turn off all other LEDs?

2.2)What hexadecimal value should I write to the GPIO port to turn on the 4 left-most LEDs?

"Express both answers using proper byte-wise padding and hex prefixes."

---------------------------------------------------------------

3.1)Trace the path of electrical current from VDD to VSS in the high-side and low-side configurations shown in the figure above. Assuming the switches are in the state shown, is the left LED turned on or off?

3.2)Is the right LED turned on or off?

--------------------------------------------------

4)Consult theofficial Arduino Uno schematics (https://www.arduino.cc/en/uploads/Main/arduino-uno-schematic.pdf). Find the yellow LED attached to digital pin 13 (pin PB5). Is this LED driven in ahigh-sideor alow-sideconfiguration?

a- High Side (Active-High)

b- Low Side (Active-Low)

------------------------------------------------------------

5)Is the LED (D7) driven in a high-side or low-side configuration?

Image:https://electrosome.com/wp-content/uploads/2013/05/LED-Blinking-with-8051-Microcontroller-AT89C51.jpg

a-Low Side (Active-Low)

b-High Side (Active-High)

------------------------------------------------------

6)What does theexternkeyword do?

a-Tell the compiler a variable should be treated as a peripheral register

b- allows us to use a variablebefore we've defined it

c-Declare a variable without allocating space for it

--------------------------------------------------------------------

7)What does the following code do?TRISA4 = 1;

a- set all 4 pins on port A as an output

b-Sets RA4's pin value high

c-Sets all 4 pins on port A high

d-Sets RA4 as an input

e-Sets all 4 pins on port A as an input

f-Sets RA4 as an output

------------------------------------------------------ 8)True or false: many microcontrollers have CPU instructions for setting or clearing an individual bit in memory locations

------------------------------------------------------

9)Why does the parallel bus in our example need anenablesignal?

a-To tell the receiver when the device is asleep or active

b-To tell the receiver when all the bytes have been sent

c-To tell the receiver when to read the bus for a new value

-------------------------------------------------------------------------------------

please solve all of the questions and give an explanation if possible.