WorksheetsEMS Lab-Seven Segment Display
Total questions: 10
Worksheet time: 3mins
Name
Class
Date
1.
How many data pins are needed on an AVR to drive a single seven-segment display without a decoder?
a)
2
b)
7 (or 8, if including the decimal point)
c)
16
d)
4
2.
What is the primary function of an AVR microcontroller in this experiment?
a)
To act as a voltage regulator
b)
To process data and output the correct pattern to the display
c)
To provide power to the display
d)
To amplify the display's signal
3.
In a Common Cathode display, which segment pin must be set to a HIGH logic level to turn it ON?
a)
The common pin
b)
The segment pin
c)
The decimal point pin
d)
All segment pins
4.
Which AVR register is typically used to send the digit pattern to the seven-segment display?
a)
PIN register
b)
DDR register
c)
TCNT register
d)
PORT register (e.g., PORTB, PORTD)
5.
What is "multiplexing" in the context of seven-segment displays?
a)
A way to use more power for the display
b)
Connecting multiple displays in parallel
c)
Using a single set of I/O pins to drive multiple displays by turning them on and off in sequence
d)
A method to increase the display's brightness
6.
If you want to display the digit '0', which segment is not turned on?
a)
The top-left segment
b)
The center segment
c)
The bottom segment
d)
The top segment
7.
What kind of components are the segments of a seven-segment display?
a)
Resistors
b)
Capacitors
c)
Transistors
d)
Light Emitting Diodes (LEDs)
8.
What is a major benefit of using a common anode configuration?
a)
It is simpler to program
b)
It's useful for interfaces that provide a high logic level to turn on the segment
c)
It simplifies the wiring for multiple displays
d)
It can be driven directly by a microcontroller's sink current
9.
What is the purpose of hexadecimal number often used for when programming a seven-segment display?
a)
To specify the clock frequency
b)
To represent a single digit's segment pattern
c)
To declare a variable
d)
To represent the memory address
10.
The AVR's port pins are used to...
a)
ground the display.
b)
provide the segment-specific signals to light up the desired digit.
c)
supply power to the display.
d)
control the clock speed of the display.
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