Post on 26-Mar-2015
0.25usec
1M
4MHz
+1 2
4069
13 12 2k2
100p 22p
11 10 9 8 1usec
RST-TB
R
6
5
4
3
1
2
7
100usec
4518R
14
13
12
11
9
10
15
R
6
5
4
3
1
2
7
100msec
4518R
14
13
12
11
9
10
15
1msec 10msec 1sec
time base &display mux
abcdefg
LDBLPH DCBA
9
10
11
12
13
15
14
4 digitdisplaycommon cathode
1
7
6
+
DCBA
CNTR
4543
33025.6mA
abcdefg R O
10
3
2
4
7
15
14
13
4017
1
2
3
4
5
6
7
8
DPnD1D2D3D4
dpc1c2c3c4
9668 ULN2004AMC1416Lc1 c2 c3 c4 dp
dot-mux16
15
14
13
12
11
10
9
YoY1Y2Y3Y4Y5Y6Y7
13
14
15
12
1
5
2
4
4051
Z
vee
3
7
TB
+
8
1
169
1 16
9668 ULN2004AMC1416Lequivalent
7x
680
100ms
1s
1ms
10ms
D Qn
QS
RD Qn
QS
R
6
3
5
1
2
4
8
11
9
13
12
10
4013
R
6
5
4
3
1
2
7
10usec
4518R
14
13
12
11
9
10
15
I7 I6 I5 I4I3I2I1I0
O2 O1O0
E
Eo GS
4532+ 5
4
3
2
1
D4 D3D2D1
13
12
11
10
15
14
6
7
9
134 312
P0 P1 P2 P31
7PLTCn
15
5
9
10
O0 O1 O2 O3146 211
CE BIN/DECn UP/DNn
4029
134 312
P0 P1 P2 P31
7PLTCn
15
5
9
10
O0 O1 O2 O3146 211
CE BIN/DECn UP/DNn
4029
134 312
P0 P1 P2 P31
7PLTCn
15
5
9
10
O0 O1 O2 O3146 211
CE BIN/DECn UP/DNn
4029
134 312
P0 P1 P2 P31
7PLTCn
15
5
9
10
O0 O1 O2 O3146 211
CE BIN/DECn UP/DNn
4029
1015 91
P0 P1 P2 P3
12
13TCuTCd
14
5
4
11
O0 O1 O2 O363 72
R U D PL
40193
+
CLKRST
+ + +
1015 91
P0 P1 P2 P3
12
13TCuTCd
14
5
4
11
O0 O1 O2 O363 72
R U D PL
40193
1015 91
P0 P1 P2 P3
12
13TCuTCd
14
5
4
11
O0 O1 O2 O363 72
R U D PL
40193
1015 91
P0 P1 P2 P3
12
13TCuTCd
14
5
4
11
O0 O1 O2 O363 72
R U D PL
40193
0A 1A 2A 3A 0B 1B 2B 3B
E A0 A1
ZA ZB VEE
4052
12 14 15 11 1 5 2 4
6
10
9
13 3 7
0A 1A 2A 3A 0B 1B 2B 3B
E A0 A1
ZA ZB VEE
4052
12 14 15 11 1 5 2 4
6
10
9
13 3 7
DP1n DP2nDP3nDP4n
13
14
15
12
Y0Y1Y2Y3Y4Y5Y6Y7
E
7
1
5
2
4
10 911
Z DPn3
VEE
A0 A1 A2
LEn
4051
A B C D
Latch
Counter
Dec -> Bin
dot-(dp)mux
Mux
MSBLSB
COUNTER
+ + + +
D Qn
QS
R
6
3
5
1
2
4RST-TB
INPUT 10k
&
1
23
&
12
1311
4013
4011
D Qn
QS
R
811
9
13
12
10
+
TB
CLK
R-TBSTBP
TBP
O3O3n O2O2n O1O1n O0O0n
D3D2D1D0
R40175
15
14
10
11
7
6
2
3
13
12
5
4
9
1
1usec
+
&
5
64 LEn
&8
910 5 6
RSTRSTn
4011
4069
&
RST
>10kL,<10kH
>10kH
>100kL
>100kH
>1ML
>1MH 8
910 &
TBS7 12
1311
D Qn
QS
R
8
11
9
13
12
10
D Qn
QS
R
6
3
5
1
2
4
TBS8
4011 4013
TB2
TB2
TB1
&
&
&
&4011
TBS9
13
12
5
6
1
2
8
9
RS1
RS0
DP2n
DP1n
DP4n
DP3n
11
4
3
10
+
clock gate circuitreset & latch circuit
decimal pointdecoder & latch
(CNTR OUT)
4013
R
6
5
4
3
1
2
7 4518R
14
13
12
11
9
10
15
D Qn
QS
R
8
11
9
13
12
10
3 4
4069UB
100usec
4013
TBS3
100up
D Qn
QS
R
6
3
5
1
2
4
0.25usec
R-TBS
D Qn
QS
R
6
3
5
1
2
4
D Qn
QS
R
6
3
5
1
2
4
D Qn
QS
R
6
3
5
1
2
4
D Qn
QS
R
8
11
9
13
12
10
D Qn
QS
R
8
11
9
13
12
10
D Qn
QS
R
6
3
5
1
2
4
D Qn
QS
R
8
11
9
13
12
10
D Qn
QS
R
8
11
9
13
12
10
TBS4 TBS5 TBS64013 4013 4013
10up1up
time baseselect circuit(frequency detector)
TBS2TBS1
>10kL,<10kH
>10kH
>100kL
>100kH
>1ML
>1MH