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7490 Decade Counter. Basic Integrated Circuit Counter 7490 Decade Counter. Modifying the count sequence. Modifying the count sequence. Modifying the count sequence. Modifying the count sequence. Modifying the count sequence. Modifying the count sequence. Modifying the count sequence. - PowerPoint PPT Presentation
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7490 Decade Counter
Basic Integrated Circuit Counter7490 Decade Counter
Clock
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Modifying the count sequence
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
Cascading Stages
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
SECONDS(One’s Digit)
SECONDS(Ten’s Digit)
Cascading Stages
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
R9(1)
CLK A
7490
QA
QB
QC
QD
CLK B
R9(2)
R0(1)
R0(2)
14
7
6
3
2
VCC
GNDInput
5
10
1
12
9
8
11
+5V
SECONDS(One’s Digit)
SECONDS(Ten’s Digit)
??
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