UNIT-3

Arduino shields are also called as _________

• a) Another Arduinos
  

• b) Extra peripherals
  

• c) Add on modules
  

• d) Connectivity modules

Two wire interface is also called as _________

• a) UART

• b) SPI

• c) I2C

• d) USART

I2c will address large number of slave devices.

• a) True

• b) False

Master transmits means _________

• a) Master node is sending data to a slave

• b) Master node is receiving data from slave

• c) Slave node is transmitting data to master

• 
  d) Slave node is sending data to master

SPI device communicates in _________

• a) Simplex

• b) Half duplex

• c) Full duplex

• d) Both half and full duplex

SPI is described as Asynchronous serial interface.

• a) True

• b) False

Which of the following is an advantage of SPI?

• a) No start and stop bits

• b) Use 4 wires

• c) Allows for single master

• d) Error checking is not present

What will be the output of the following Arduino code?

void main()

{

int a = 0;

double d = 10.21;

printf("%lu", sizeof(a + d));

}

void loop() {}

• a) 10.21
  
  
  

• b) 8

• c) null

• d) 23

What will be the output of the following Arduino code?

void main()

{

int a = 0;

double d = 10.21;

printf("%lu", sizeof(a + d));

}

void loop() {}

• a) 10.21
  
  
  

• b) 8

• c) null

• d) 23

What is the use of the SD.h Library in Arduino?

• a) To communicate with the computer

• b) To communicate with the internet

• c) To communicate with the SD Card Module

• d) To communicate with another microcontroller