GPIO - Quiz

What is the LPC2148?

• A 64-bit Microcontroller

• A 32-bit Microcontroller

• A 16-bit Microcontroller

• A 8-bit Microcontroller

Which company manufactures the LPC2148?

• Microchip Technology

• Texas Instruments

• NXP Semiconductors

• Intel

What does GPIO stand for?

• General Purpose Integrated Output

• General Purpose Input Output

• General Purpose Integrated Operation

• General Purpose Input Operation

How many IO ports does LPC2148 have?

• 4

• 1

• 2

• 3

What is the function of the IODIR register?

• To set the direction of GPIO pins

• To set the output of GPIO pins

• To read the current status of GPIO pins

• To clear the output of GPIO pins

Which pin of PORT0 is an output-only pin?

• P0.24

• P0.31

• P0.0

• P0.15

What does the IOSET register do?

• Sets a port pin to logic LOW

• Clears a port pin to logic LOW

• Sets a port pin to logic HIGH

• Reads the current status of GPIO pins

What is the purpose of the delay function in the LED blinking program?

• To initialize the GPIO pins

• To create a pause between LED states

• To read the status of the switch

• To increase the speed of the program

Which register controls the output of PORT1 pins?

• IODIR1

• IODIR0

• IOSET1

• IOSET0

What is the role of a resistor when connecting an LED to a GPIO pin?

• To provide a ground connection

• To decrease the voltage

• To limit the current

• To increase the voltage