CpE324-M3Quiz

Which of the following is the number of pins on the LCD?

• 12

• 14

• 16

• 18

Which of the following are the sizes of LCD?

• 16 x 4

• 4 x 16

• 20 x 4

• 4 x 20

Which of the following is used to control the LCD screen contrast?

• switch

• LED

• potentiometer

• backlight

Which of the following is the command to display text to LCD?

• lcd.set( )

• LiquidCrystal.h

• lcd.print( )

• lcd.begin( )

Type the LCD output of the following code:
int temp = 10;
lcd.print(temp);

Which of the following is the number of LEDs used in 7-segment?

• 1

• 5

• 6

• 7

Which of the following LEDs will be used to show 4 in 7-segment?

• c, d, e, f, g

• b, c, d, e, g

• b, c, d, e, f

• c, d, e, f, h

Type the number digit to be outputted by this code?

digitalWrite(pinA, LOW);

digitalWrite(pinB, HIGH);

digitalWrite(pinC, HIGH);

digitalWrite(pinD, LOW);

digitalWrite(pinE, LOW);

digitalWrite(pinF, HIGH);

digitalWrite(pinG, HIGH);

What is the meaning of PWM?

• pulse width modem

• pull width modulation

• pulse wide modulation

• pulse width modulation

Which of the following are components of the 8×8 dot matrix?

• 16 LEDs with 64 pins

• 46 LEDs with 16 pins

• 64 LEDs with 16 pins

• 16 LEDs with 46 pins