Complete the electronic circuit for the push buttons (i) and 7 segment LED (ii) in Figure 3.2 to enable the control of the counter from the microcontroller if the internal pull-up resistors of the microcontroller are not configured.

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A microcontroller of PIC16F84A and a 7-segment LED are used to form an down-
count counter from 9 to 0. The input devices and 7-segment LED on the operation
panel are shown in Figure 3.1 while the related electronic circuit and Flowcode
program are as shown in Figures 3.2 and 3.3, respectively. Answer the following
questions if the counter is operated at high level input voltage those are controlled by
the input devices for the data input and stop functions.
Count
Stop
LED Counter
Figure 3.1 A countdown counter using 7-segment LED
Count
(1)
X1
U1
16
15
17
OSCICLKIN
oscziCLKOUT
RAD
RA1
18
Stop
RAZ
RAS
RAATOCKI
4
MCLR
4MHZ CRYSTAL
C1
C2
RBOINT
RB1
RB2
RB3
RB4
RBS
RB6
RB7
22pF
PIC16F84A
SV
RO
Figure 3.2 Electronic cireuit for the counter
-lelal
Transcribed Image Text:A microcontroller of PIC16F84A and a 7-segment LED are used to form an down- count counter from 9 to 0. The input devices and 7-segment LED on the operation panel are shown in Figure 3.1 while the related electronic circuit and Flowcode program are as shown in Figures 3.2 and 3.3, respectively. Answer the following questions if the counter is operated at high level input voltage those are controlled by the input devices for the data input and stop functions. Count Stop LED Counter Figure 3.1 A countdown counter using 7-segment LED Count (1) X1 U1 16 15 17 OSCICLKIN oscziCLKOUT RAD RA1 18 Stop RAZ RAS RAATOCKI 4 MCLR 4MHZ CRYSTAL C1 C2 RBOINT RB1 RB2 RB3 RB4 RBS RB6 RB7 22pF PIC16F84A SV RO Figure 3.2 Electronic cireuit for the counter -lelal
Complete the electronic circuit for the push buttons (i) and 7 segment LED (ii)
in Figure 3.2 to enable the control of the counter from the microcontroller if the
internal pull-up resistors of the microcontroller are not configured.
Transcribed Image Text:Complete the electronic circuit for the push buttons (i) and 7 segment LED (ii) in Figure 3.2 to enable the control of the counter from the microcontroller if the internal pull-up resistors of the microcontroller are not configured.
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