EMS Lab-Seven Segment Display

How many data pins are needed on an AVR to drive a single seven-segment display without a decoder?

• 2
• 7 (or 8, if including the decimal point)
• 16
• 4

What is the primary function of an AVR microcontroller in this experiment?

• To act as a voltage regulator
• To process data and output the correct pattern to the display
• To provide power to the display
• To amplify the display's signal

In a Common Cathode display, which segment pin must be set to a HIGH logic level to turn it ON?

• The common pin
• The segment pin
• The decimal point pin
• All segment pins

Which AVR register is typically used to send the digit pattern to the seven-segment display?

• PIN register
• DDR register
• TCNT register
• PORT register (e.g., PORTB, PORTD)

What is "multiplexing" in the context of seven-segment displays?

• A way to use more power for the display
• Connecting multiple displays in parallel
• Using a single set of I/O pins to drive multiple displays by turning them on and off in sequence
• A method to increase the display's brightness

If you want to display the digit '0', which segment is not turned on?

• The top-left segment
• The center segment
• The bottom segment
• The top segment

What kind of components are the segments of a seven-segment display?

• Resistors
• Capacitors
• Transistors
• Light Emitting Diodes (LEDs)

What is a major benefit of using a common anode configuration?

• It is simpler to program
• It's useful for interfaces that provide a high logic level to turn on the segment
• It simplifies the wiring for multiple displays
• It can be driven directly by a microcontroller's sink current

What is the purpose of hexadecimal number often used for when programming a seven-segment display?

• To specify the clock frequency
• To represent a single digit's segment pattern
• To declare a variable
• To represent the memory address

The AVR's port pins are used to...

• ground the display.
• provide the segment-specific signals to light up the desired digit.
• supply power to the display.
• control the clock speed of the display.