5. This build introduced the resistor ladder. a. (1\%) What is the advantage of using a resistor ladder over connecting each pushbutton to its own pin? b. Complete the following table. You need to calculate VAO and keyVal, not read off the serial monitor. Each value has only one value, no range. (1% each) *keyVal is the variable in the code which stores the output of the ADC. 11 else if (kkVal>=990 \&\& keyVal =1010){ 12 tone (8,notes[1]); 13 else if ( keyVal >=505 \&\& keyVal =515){ 14 tone (8,notes[2]); 15 else if ( keyVal >=5 \&\& keyVal &=10){ 16 tone (8,notes[3]); 18} 20 else\{ 21 notone (8); 22} tht buttons[6]: If set up: an arxay with o 6 integers int buttons [0]=2 : N. give the fist element of the array the value 2 I. int notes []={262,294,330,349} : void setap( ) 1) Serialinegin (9600) 1 3. vaid logp() t Int k kVal = ahalogies ((A); serial.pyunt in(keyval): 3. if (keyval 31023) t torin(8, notes {0}) : 1