Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

LED A

LED 7 o n A chung (Anode)

a b c d e f g

0 0 0 0 0 0 0

1 1 1 1 1 1 1

Ng vo

Hi n th

n LED

Sng

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

a

b

c

d

e

f g

dp

a b c d e f g d p

a b c d e f g d p

Cau truc loai anode chung

Cau truc loai cathode chung

Hnh 1.1: Dang hien th va cau truc LED 7 oan.

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6217

453

1312111091514

DCBA

BI/RBORBILT

abcdefg

LED A

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

Input OutputNg K Ng d li u

LT RBI RBO D C B A a b c d e f g1 1 1 0 0 0 0 0 0 0 0 0 0 1

1 1 1 0 0 0 1 1 0 0 1 1 1 1

1 1 1 0 0 1 0 0 0 1 0 1 1 0

1 1 1 0 0 1 1 0 0 0 0 1 1 0

1 1 1 0 1 0 0 1 0 0 1 1 0 0

1 1 1 0 1 0 1 0 1 0 0 1 0 0

1 1 1 0 1 1 0 1 1 0 0 0 0 0

1 1 1 0 1 1 1 0 0 0 1 1 1 1

1 1 1 1 0 0 0 0 0 0 0 0 0 0

1 1 1 1 0 0 1 0 0 0 1 1 0 0

0 1 1 X X X X 0 0 0 0 0 0 0

X 0 1 X X X X 1 1 1 1 1 1 1

X X 0 X X X X 1 1 1 1 1 1 1

B ng ho t ng m ch gi i m ko Led 7 o n A chung (IC 74LS47)

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

DCBA

BI/RBORBILT

abcdefg

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 0 0 0 0 0 0 0 0 0 1

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

D

C

B

A

BI/RBO

RBI

LT

a

b

c

d

e

f

g

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 0 0 1 1 0 0 1 1 1 1

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

D

C

B

A

BI/RBO

RBI

LT

a

b

c

d

e

f

g

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 0 1 0 0 0 1 0 0 1 0

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

D

C

B

A

BI/RBO

RBI

LT

a

b

c

d

e

f

g

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 0 1 1 0 0 0 0 1 1 0

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

D

C

B

A

BI/RBO

RBI

LT

a

b

c

d

e

f

g

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 1 0 0 1 0 0 1 1 0 0

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N

Hoc vin cng ngh BCVT Khoa Ky Thut in T II

Bai giang Ky Thut S

74LS47

6

2

1

7

4

5

3

13

12

11

10

9

15

14

D

C

B

A

BI/RBO

RBI

LT

a

b

c

d

e

f

g

LED A

Input Output

Ng K Ng d li u

LT RBI RBO D C B A a b c d e f g

1 1 1 0 1 0 1 0 1 0 0 1 0 0

CH NG 4: M CH LOGIC T H P M CH GI I M KO LED 7 O N