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?3. Design and Implement Two-Digit Seven-Segment Display Decoder Using a Button Adding to your circuit from the previous section, create a circuit that can drive a second digit on the 7 segment display device with a new digit pattern defined by the other four slide switches on your board. Since there are only seven signals available to drive the digit segments, you need only one bin2seg component to drive those signals, and a 2:1 "bus multiplexer" to choose which set of switches are connected to the bin2seg component. The signal used to select which switches drive the display can also be used to select which digit is enabled - using the same signal for both purposes ensures the correct data will always appear on the same display digit. A push button can be used to drive the select signal. Figure 2 below shows the two-digit seven-segment display Decoder using a button. 2:1 Bus Mux bin2seg CA CB Switches(7:4) 1 CC CD Switches(3:0) 0 s CE CF CG Lo Push- button E ANO AN1 AN2 AN3 Should it be a '0' or a '1' on AN2 and AN3 to turn these digits off? The inverter allows a single digit to be driven at any time Figure 3. Seven-Segment Display Circuit

          ?3. Design and Implement Two-Digit Seven-Segment Display Decoder Using a Button
Adding to your circuit from the previous section, create a circuit that can drive a second digit on the 7 segment display
device with a new digit pattern defined by the other four slide switches on your board. Since there are only seven signals
available to drive the digit segments, you need only one bin2seg component to drive those signals, and a 2:1 "bus
multiplexer" to choose which set of switches are connected to the bin2seg component. The signal used to select which
switches drive the display can also be used to select which digit is enabled - using the same signal for both purposes
ensures the correct data will always appear on the same display digit. A push button can be used to drive the select
signal. Figure 2 below shows the two-digit seven-segment display Decoder using a button.
2:1 Bus
Mux
bin2seg
CA
CB
Switches(7:4)
1
CC
CD
Switches(3:0)
0 s
CE
CF
CG
Lo
Push-
button
E
ANO AN1
AN2 AN3
Should it be a '0'
or a '1' on AN2
and AN3 to turn
these digits off?
The inverter allows a single digit to be driven at any time
Figure 3. Seven-Segment Display Circuit

?3. Design and Implement Two-Digit Seven-Segment Display Decoder Using a Button
Adding to your circuit from the previous section, create a circuit that can drive a second digit on the 7 segment display
device with a new digit pattern defined by the other four slide switches on your board. Since there are only seven signals
available to drive the digit segments, you need only one bin2seg component to drive those signals, and a 2:1 "bus
multiplexer" to choose which set of switches are connected to the bin2seg component. The signal used to select which
switches drive the display can also be used to select which digit is enabled - using the same signal for both purposes
ensures the correct data will always appear on the same display digit. A push button can be used to drive the select
signal. Figure 2 below shows the two-digit seven-segment display Decoder using a button.
2:1 Bus
Mux
bin2seg
CA
CB
Switches(7:4)
1
CC
CD
Switches(3:0)
0 s
CE
CF
CG
Lo
Push-
button
E
ANO AN1
AN2 AN3
Should it be a '0'
or a '1' on AN2
and AN3 to turn
these digits off?
The inverter allows a single digit to be driven at any time
Figure 3. Seven-Segment Display Circuit

Added by Stephen R.

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