background image

Wiring Sequence

       

1-76, 2-3,  

4-8-39-75, 7-28-54, 18-53-66,  

19-30-67-60, 31-48-73,  

27-47-72, 38-29, 74-59-26-77

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75, 7-28-54, 18-53-66, 

19-30-67-60, 31-48-73, 

27-47-72, 36-29, 74-59-26-77

Wiring Sequence

       

1-76, 2-3, 

4-29-60-45, 73-58-46, 

72-59-27, 30-28, 31-35, 

26-34-57-77

Wiring Sequence

       

1-76, 2-3, 

4-33-51-54-15, 32-35, 

64-49-25, 52-65, 28-50-53, 

27-58-14, 26-34-57-63-77

31

EXPERIMENT

Adjustable and blow-able
super LED light

Wiring Sequence

       

1-76, 2-3, 

7-26-72-74-77, 28-30, 

8-31-19, 18-54, 27-53-60, 

20-59-73, 4-29-21-75

45

EXPERIMENT

Magnet control delayed
motor dory sound

32

EXPERIMENT

Manual control extinguish-
and-light super LED light 

33

EXPERIMENT

Touch control motor dory sound
with red LED

34

EXPERIMENT

Touch control motor dory sound
with green LED 

35

EXPERIMENT

Touch control ship sound with LED

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75, 7-28-54, 18-53-68, 

19-30-69-60, 31-48-73, 

27-47-72, 36-29, 74-59-26-77

36

EXPERIMENT

38

EXPERIMENT

Magnet control ship sound with LED

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75, 7-28-54, 

18-53-68, 19-30-69-60, 

31-20-73, 27-21-72, 

36-29, 74-59-26-77

37

EXPERIMENT

Magnet control motor dory sound
with green LED

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75, 7-28-54, 

18-53-66, 19-30-67-60, 

31-20-73, 27-21-72 ,36-29, 

74-59-26-77

39

EXPERIMENT

Wiring Sequence

       

1-76, 2-3 

4-8-37-75 ,7-28-54, 

53-71, 30-70-60, 

31-20-73, 27-21-72, 

36-29, 74-59-26-77

40

EXPERIMENT

Manual control electronic metronome
with LED

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75, 7-28-54, 

53-71, 30-70-60, 

31-46-73, 27-45-72, 

36-29, 74-59-26-77

41

EXPERIMENT

Wiring Sequence

       

1-76, 2-3, 

4-8-39-75, 7-28-54, 

18-53-66, 19-30-67-60, 

31-46-73, 27-45-72, 

38-29, 74-59-26-77

42

EXPERIMENT

Manual control motor dory sound
with green LED

Wiring Sequence

       

1-76, 2-3, 

4-8-37-75,  7-28-54, 

18-53-66, 19-30-67-60, 

31-46-73 , 27-45-72, 

36-29, 74-59-26-77

43

EXPERIMENT

Manual control ship sound with LED

Wiring Sequence

       

1-76, 

2-3, 4-8-37-75 7-28-54, 

18-53-68, 19-30-69-60, 

31-46-73, 27-45-72 

36-29, 74-59-26-77

46

EXPERIMENT

Manual control metronome

Wiring Sequence

       

1-76, 2-3, 

7-26-72-74-77, 28-30,  

8-31-70, 71-54, 27-53-60 

46-59-73, 4-29-45-75

44

EXPERIMENT

Manual control delayed motor dory sound

Wiring Sequence

       

1-76, 2-3, 

7-26-72-74-77, 28-30, 

8-31-19, 54-18, 

27-53-60, 46-59-73, 

4-29-45-75

35

34

27

28

26

33

32

25

2

1

76

77

14

15

57

58

10K

53

54

1K

50

49

65

63

64

51

52

100

4

3

46

45

27

28

26

29

31

30

57

58

10k

73

72

100uF

59

60

100K

76

77

4

3

2

1

35

34

37

36

27

28

26

47

48

18

19

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

75

74

470uf

39

38

27

28

26

47

48

18

19

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

75

74

470uf

76

77

69

68

104

37

36

27

28

26

47

48

18

19

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

75

74

470uf

67

66

203

37

36

27

28

26

18

19

7

8

73

72

100 UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

20

21

75

74

470uf

67

66

203

39

38

27

28

26

18

19

7

8

73

72

100 UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

20

21

75

74

470uf

69

68

104

37

36

27

28

26

18

19

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

20

21

75

74

470uf

71

70

10uf

37

36

27

28

26

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

20

21

75

74

470uf

71

70

10uf

37

36

27

28

26

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

46

45

75

74

470uf

67

66

203

37

36

27

28

26

46

45

18

19

7

8

73

72

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

75

74

470uf

67

66

203

39

38

27

28

26

46

45

18

19

7

8

73

72

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

76

77

75

74

470uf

76

77

69

68

104

37

36

27

28

26

46

45

18

19

7

8

73

72

100UF

4

3

2

1

59

60

10

0K

53

54

1K

29

31

30

75

74

470uf

76

77

4

3

2

1

7

8

18

19

53

54

1K

27

28

26

73

72

100UF

46

45

29

31

30

59

60

100k

75

74

470uf

76

77

4

3

2

1

7

8

18

19

53

54

1K

27

28

26

73

72

100UF

29

31

30

59

60

100k

75

74

470uf

20

21

47

EXPERIMENT

Multitone producer

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7, 8-31-65, 

26-37,  28-30, 4-29-60-75, 

66-59-27, 67-64

71

70

10uf

76

77

4

3

2

1

7

8

53

54

1K

27

28

26

73

72

100UF

46

45

29

31

30

59

60

100k

75

74

470uf

76

77

4

3

2

1

7

8

27

28

26

29

31

30

59

60

100k

67

66

203

37

36

63

65

64

75

74

470uf

48

EXPERIMENT

Magnet control multitone producer

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7, 8-31-65,  

26-37,  28-30, 4-29-60-75, 

66-27-21,  67-64, 59-20

49

EXPERIMENT

Manual control multitone producer

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7, 8-31-65, 

26-37, 28-30, 4-29-60-75, 

66-27-45, 67-64, 59-46

50

EXPERIMENT

Electronic cicada 

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7,  8-31-65, 

26-37, 28-30, 4-29-60-75,  

69-59-27-18, 19-64-68

51

EXPERIMENT

Light control creaking sound

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7, 8-31-65, 

26-37, 28-30, 4-29-62-75, 

69-61-27-18 , 19-64-68

52

EXPERIMENT

Ship sound

Wiring Sequence

       

1-76, 2-3, 

74-36-77-7, 8-31-65, 

26-37, 28-30, 4-29-60-75,  

69-67-59-27,  66-64-68

53

EXPERIMENT

Adjustable flashing LED light

Wiring Sequence

       

1-76, 2-3, 

74-64-36-34-77, 

65-70-35-31, 26-37, 28-30, 

4-29-60-75,  71-59-27

54

EXPERIMENT

Magnet control adjustable flashing LED light

Wiring Sequence

       

1-76, 2-3,  

74-64-36-34-77, 70-65-35-

31, 26-37, 28-30, 4-21-29-

75, 60-20, 71-59-27

76

77

4

3

2

1

7

8

27

28

26

29

31

30

59

60

100k

67

66

203

37

36

63

65

64

75

74

470uf

20

21

46

45

76

77

4

3

2

1

7

8

27

28

26

29

31

30

59

60

100k

67

66

203

37

36

63

65

64

75

74

470uf

76

77

4

3

2

1

7

8

27

28

26

37

36

29

31

30

69

68

104

59

60

100k

18

19

63

65

64

75

74

470uf

62

61

76

77

4

3

2

1

7

8

27

28

26

37

36

29

31

30

69

68

104

18

19

63

65

64

75

74

470uf

67

66

203

76

77

4

3

2

1

7

8

27

28

26

37

36

29

31

30

69

68

104

59

60

100k

63

65

64

75

74

470uf

59

60

100k

76

77

4

3

2

1

27

28

26

29

31

30

37

36

71

70

10uf

35

34

65

63

64

75

74

470uf

76

77

4

3

2

1

27

28

26

29

31

30

65

63

64

37

36

71

70

10uf

35

34

75

74

470uf

59

60

100k

20

21

• Complete 

all 

wiring 

connections  as  indicated  in  the  sequence.  Switch  on 
the  main  switch.  Turn  the  variable  resistor  from 
minimum  to  maximum,  and  the  super  LED  light  will 
change from dim to bright. Adjust the variable resistor 
to  a  position  which  just  causes  the  light  to  be 
extinguished. And then if you clap your hands near the 
microphone, blow to the microphone, or speak loudly 
will cause the super LED to light up.

• Complete 

all 

wiring 

connections as indicated in 
the  sequence.  Switch  on  the  main  switch.  LED  will
light  up.  Press  the  push  switch  once  and  release
immediately, then LED will extinguish. Just wait for a 
while. After some time, the LED will light up again! If 
you want to repeat the experiment, just press the push 
switch again.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  touch  the 
touch-plate with finger. The circuit will be connected and 
thus the speaker will produce motor dory sound. At the 
same  time,  red  LED  will  light  up.  When  the  finger  is 
removed from the touch-plate, the circuit is disconnected 
and thus everything will stop.
Note that you may have to dampen your finger with water 
before touching the touch-plate, and wipe the water off 
the touch plate after you remove your finger from it.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  touch  the 
touch-plate with finger. The circuit will be connected and 
thus the speaker will produce motor dory sound. At the 
same time, green LED will light up. When the finger is 
removed from the touch-plate, the circuit is disconnected 
and thus everything will stop.
Note  that  you  may  have  to  dampen  your  finger  with 
water before touching the touch-plate, and wipe the water 
off the touch plate after you remove your finger from it.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence. Switch on the main switch. Then touch the 
touch-plate  with  finger.  The  circuit  will  be  connected 
and thus the speaker will produce ship sound. At the 
same  time,  LED  will  light  up.  When  the  finger  is 
removed  from  the  touch-plate,  the  circuit  is 
disconnected and thus everything will stop.
Note that you may have to dampen your finger with 
water  before  touching  the  touch-plate,  and  wipe  the 
water off the touch plate after you remove your finger 
from it.

Wiring Sequence

       

1-76, 2-3, 

4-8-39-75, 7-28-54, 18-53-66,  

19-30-67-60, 31-20-73, 

27-21-72, 38-29, 74-59-26-77

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  use  the 
magnetic  pole  to  access  the  reed  switch.  The  circuit 
will be connected and thus the speaker will produce 
motor dory sound. At the same time red LED will light 
up. When the magnetic pole is removed from the reed 
switch, the circuit is disconnected and thus everything 
will stop.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  use  the 
magnetic pole to access the reed switch. The circuit will 
be connected and thus the speaker will produce motor 
dory sound. At the same time green LED will light up. 
When  the  magnetic  pole  is  removed  from  the  reed 
switch, the circuit is disconnected and thus everything 
will stop.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  use  the 
magnetic  pole  to  access  the  reed  switch.  The  circuit 
will be connected and thus the speaker will produce 
ship sound. At the same time LED will light up. When 
the magnetic pole is removed from the reed switch, the 
circuit is disconnected and thus everything will stop.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence.  Switch  on  the  main  switch.  Then  use  the 
magnetic pole to access the reed switch. The circuit is 
then connected and the speaker will make a sound and 
LED will light up. Remove the magnetic pole, then LED 
will flash and gradually extinguish. At the same time 
speaker will produce “dic, dic” sound and gradually 
stop. Both LED and speaker are like oscillating and will 
fade away gradually.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence. Switch on the main switch. Then press the 
push  switch.  The  circuit  is  then  connected  and  the 
speaker  will  make  a  sound  and  LED  will  light  up. 
Release  the  push  switch,  then  LED  will  flash  and 
gradually  extinguish.  At  the  same  time  speaker  will 
produce “dic, dic” sound and gradually stop. Both LED 
and  speaker  are  like  oscillating  and  will  fade  away 
gradually.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence. Switch on the main switch. Press the push 
switch.  The  circuit  will  be  connected  and  thus  the 
speaker will produce motor dory sound. At the same 
time red LED will light up. And then release the push 
switch. The circuit is disconnected and thus everything 
will stop.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence. Switch on the main switch. Press the push 
switch.  The  circuit  will  be  connected  and  thus  the 
speaker will produce motor dory sound. At the same 
time green LED will light up. And then release the push 
switch. The circuit is disconnected and thus everything 
will stop.

• Complete  all  wiring  connections  as  indicated  in  the 

sequence. Switch on the main switch. Press the push 
switch.  The  circuit  will  be  connected  and  thus  the 
speaker will produce ship sound. At the same time LED 
will  light  up.  And  then  release  the  push  switch.  The 
circuit is disconnected and thus everything will stop.

• Complete 

all 

wiring 

connections  as  indicated 
in the sequence. Switch on 
the main switch. Press the push switch. The circuit will 
be connected and thus the speaker will produce motor 
dory  sound.  And  then  release  the  push  switch.  The 
circuit is disconnected. However the motor dory sound 
will  still  prolong  for  a  period  and  will  fade  away 
gradually.

• Complete  all  wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on  the  main  switch.  Use 
the magnetic pole to access the reed switch. The circuit 
will be connected and thus the speaker will produce 
motor dory sound. And then remove the magnetic pole. 
The  circuit  is  disconnected.  However  the  motor  dory 
sound will still prolong for a period and will fade away 
gradually.

• Complete 

all 

wiring 

connections  as  indicated 
in the sequence. Switch on 
the  main  switch.  Then 
press the push switch. The circuit is then connected and 
the speaker will produce “dic, dic” sound. When the 
push  switch  is  released,  speaker  will  still  keep  on 
producing  the  “dic,  dic”  sound,  but  the  sound  will 
gradually fading away and stop finally. 

• Complete 

all 

wiring 

connections as indicated in 
the sequence. Switch on the 
main  switch.  Then  the 
loudspeaker  will  make  a  noisy  sound  and  LED  will 
light up. Adjusting the variable resistor for changing 
the resistance will affect the sound and the brightness 
of the LED.

• Complete 

all 

wiring 

connections  as  indicated 
in the sequence. Switch on 
the  main  switch.  Use  a 
magnetic  pole  to  access  the  reed  switch.  Then  the 
circuit  will  be  connected  and  the  loudspeaker  will 
make a noisy sound and LED will light up. Adjusting 
the  variable  resistor  for  changing  the  resistance  will 
affect the sound and the brightness of the LED.

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on the main switch. Press 
the push switch, and then the circuit will be connected. 
The loudspeaker will make a noisy sound and LED will 
light  up.  Adjusting  the  variable  resistor  for  changing 
the resistance will affect the sound and the brightness 
of the LED.

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on  the  main  switch.  The 
LED will light up and loudspeaker will produce cicada 
like  sound.    Adjusting  the  variable  resistor  for 
changing the resistance will affect the sound tone and 
the brightness of LED. 

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on the main switch. LED will light up. Loudspeaker will 
produce creaking sound unless the variable resistor is 
in the minimum position. Then shade the LDR a little bit. 
The brightness of the LED will decrease, and the tone of 
the creaking sound will change. The more you shade 
the LDR, the more change on the tone of the sound and 
the  dimmer  the  LED  will  be.  You  can  also  adjust  the 
variable resistor to obtain different effect.

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on  the  main  switch.  Then 
the loudspeaker will produce ship sound. Adjusting the 
variable resistor can change the resistance and hence 
change the sound tone.

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on the main switch. The LED will light up. Adjusting the 
variable resistor will change the LED from flashing to 
not  flashing.  When  the  variable  resistor  is  at  its 
maximum  position,  the  LED  will  flash.  When  the 
variable resistor is at its minimum position, the LED will 
not flash.

• Complete 

all 

wiring 

connections  as  indicated 
in  the  sequence.  Switch 
on the main switch. Use a magnetic pole to access the 
reed switch. The circuit is then connected. LED will light 
up. Adjusting the variable resistor will change the LED 
from  flashing  to  not  flashing.  When  the  variable 
resistor is at its maximum position, the LED will flash. 
When the variable resistor is at its minimum position, 
the LED will not flash.

Magnet control electronic metronome
with LED

Magnet control motor dory sound
with red LED

Manual control motor dory sound
with red LED

P.9

P.10

P.11

P.12

Summary of Contents for 32072

Page 1: ......

Page 2: ...T R O N E X Connects to the circuit T R O N E X Connects to the circuit No 32072 No 32072 7 2 7 2 7 2 Amazing Amazing Science Workshop Science Workshop More than 72 exciting educational experiments ...

Page 3: ...le to build your understanding through experimenting and maybe trying out some interesting experiments on your own This electronic circuit kit contains more than 72 experiments and it is smartly designed that the main circuit board unit has all the relevant electronic components included All you have to do is simply connect the wires according to the wiring sequence of each experiment and follow t...

Page 4: ...ound with red LED 37 Magnet control motor dory sound with green LED 38 Magnet control ship sound with LED 39 Magnet control electronic metronome with LED 40 Manual control electronic metronome with LED 41 Manual control motor dory sound with red LED 42 Manual control motor dory sound with green LED 43 Manual control ship sound with LED 44 Manual control delayed motor dory sound 45 Magnet control d...

Page 5: ...polarity Do not use rechargeable batteries Non rechargeable batteries are not to be recharged Re chargeable batteries are only to be charged under adult supervision Re chargeable batteries are to be removed from the toy before being charged Different types of batteries or new and used batteries are not to be mixed Exhausted batteries are to be removed from the toy The supply terminals are not to b...

Page 6: ...76 1 4 EXPERIMENT Diode and capacitor charging discharging Wiring Sequence 2 76 50 51 77 75 49 45 39 46 37 52 1 36 38 74 6 5 M 2 1 76 77 2 EXPERIMENT Color filter in parallel with red LED light Wiring Sequence 2 6 52 51 39 1 76 5 77 38 5 EXPERIMENT LED light Wiring Sequence 2 3 4 35 34 77 1 76 6 EXPERIMENT Basic circuitry of LED light Wiring Sequence 1 34 2 3 35 38 46 45 39 77 4 76 6 5 M 2 1 76 77...

Page 7: ...ble resistor to a point which just will not trigger the color filter to rotate This time clap near the microphone or blow to the microphone or simply speak loudly will cause the color filter to rotate Complete all wiring connections as indicated in the sequence Switch on the main switch and touch the touching plate with your finger The circuit will be connected and motor will begin to rotate If to...

Page 8: ...h on the main switch Green LED will light up while red LED will not Shade the LDR a little bit green LED will become dimmer Shade the LDR a bit more then green LED will extinguish and red LED will start to light dimly When the LDR is covered completely green LED will extinguish and red LED will light up completely This principle can be used as light indicator to reflect the amount of light shining...

Page 9: ...se components will get overheated Complete all wiring connections as indicated in the sequence Switch on the main switch LED will light up Then cover the LDR completely LED will extinguish Do not uncover the LDR and wait After a while LED will light up again And then if you uncover the LDR the statue will be just like the beginning of the experiment You can repeat the experiment without switching ...

Page 10: ...ill light up At the same time the capacitor is being charged Remove the magnetic pole The triode can still be conductive for some time as the capacitor will release the stored electricity Therefore the LED will not extinguish immediately after you remove the magnetic pole Complete all wiring connections as indicated in the sequence Switch on the main switch Touch the touch plate with finger You ma...

Page 11: ... some time the LED will light up again If you want to repeat the experiment just press the push switch again Complete all wiring connections as indicated in the sequence Switch on the main switch Then touch the touch plate with finger The circuit will be connected and thus the speaker will produce motor dory sound At the same time red LED will light up When the finger is removed from the touch pla...

Page 12: ...uit is disconnected and thus everything will stop Complete all wiring connections as indicated in the sequence Switch on the main switch Then use the magnetic pole to access the reed switch The circuit will be connected and thus the speaker will produce ship sound At the same time LED will light up When the magnetic pole is removed from the reed switch the circuit is disconnected and thus everythi...

Page 13: ...time LED will light up And then release the push switch The circuit is disconnected and thus everything will stop Complete all wiring connections as indicated in the sequence Switch on the main switch Press the push switch The circuit will be connected and thus the speaker will produce motor dory sound And then release the push switch The circuit is disconnected However the motor dory sound will s...

Page 14: ...ill affect the sound and the brightness of the LED Complete all wiring connections as indicated in the sequence Switch on the main switch The LED will light up and loudspeaker will produce cicada like sound Adjusting the variable resistor for changing the resistance will affect the sound tone and the brightness of LED Complete all wiring connections as indicated in the sequence Switch on the main ...

Page 15: ...l produce di di sound like that of automobile Complete all wiring connections as indicated in the sequence When the push switch is pressed LED will light up and the loudspeaker will produce hoofbeat like sound Complete all wiring connections as indicated in the sequence Switch on the main switch Then the LED will light up Adjusting the variable condenser to suitable position will allow it to recei...

Page 16: ...again Complete all wiring connections as indicated in the sequence Switch on the main switch If you press the button select which is located at the left side of the panel then it will perform a FM auto search The receiver will search for channel from lower end to upper end It will stop searching when it finds a channel You may press search again to let it search for another channel You will have t...

Page 17: ...al received Complete all wiring connections as indicated in the sequence Switch on the main switch If you want to use AM mode connect lead A and lead B You may connect both leads to an unused spring for easy handling And then adjust the variable condenser to suitable position for receiving AM channels Since AM radio wave is sensitive towards signal direction when the radio signal is weak try to mo...

Page 18: ...m lower end to upper end It will stop searching when it finds a channel You may press search again to let it search for another channel You will have to press the reset button if the receiver has searched to the upper most channel and cannot find anything By pressing the push switch the radio will be mute It is recommended to add a wire on the FM ANT which is located on the left side of the panel ...

Page 19: ...rophone A device converts sound into an electrical or acoustic signal Motor A device converts electrical energy to mechanical motion Reed Switch A magnetically controlled switch made to open and close a circuit Resistance A measurement of the degree to which an object opposes an electrical current through it Resistor A device designed for possessing resistance Seven Segment LED Display A display d...

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