HDSP-2301 HP [Agilent(Hewlett-Packard)], HDSP-2301 Datasheet - Page 23

• Manufacturer Part Number: HDSP-2301
• Description: Four Character 5.0 mm (0.20 inch) 5 x 7 Alphanumeric Displays
• Manufacturer: HP [Agilent(Hewlett-Packard)]

there are 32 modules of four digits
each, the transistors must source
up to 32 times 410 mA or approxi-
mately 13 A. Darlington PNP
power transistors (2N6285) with
the proper resistors have been
used to accomplish this task.
Figure 9. 128 Character ASCII Decoder Table Used by the 6800 Refresh Program in Figure 6. 8080A Refresh Programs in
Figures 7, 8, and 12, and the HDSP-2471 DISPLAY PROCESSOR CONTROLLER. Decoded 5x7 Display Font is shown in the
HDSP-247X Data Sheet
DECODER
ADDRESS
FOR FIG.
7,8,12
E500
E580
E600
E680
E700
DECODER
ADDRESS
FIG.6
FOR
0600
0680
0700
0780
0800
HDSP-2471
ADDRESS
ROM
0A0
0B0
0C0
0D0
0E0
0F0
2A0
2B0
2C0
2D0
2E0
2F0
080
090
100
110
120
130
140
150
160
170
180
190
lA0
lB0
lC0
lD0
lE0
200
210
220
230
240
250
260
270
280
290
lF0
5D 09
3E 00
3E 7E
7F 3E
7C 18
1C 48
3E 45
0B 44
7F 40
3E 00
1E 7E
08
10
00
00
08
00 5F
51
41
09
07
14
78 7E
00
49 7F
09
24
08
00
45
55
09
00 3C
24 7C
00
04
00
06 5E
00
18
Display Processor
Controller
The previously mentioned inter-
face techniques provide only for
the display of ASCII coded data.
Such important features as a
blinking cursor, editing routines,
and character addressing must be
provided by other subroutines in
30
18
00
38
24
42
09
41
44
24
00
51
14
24
00
40
09
21
30
18
00
40
40
5E 78
7C 54
5E 78
00
62
7F 3E
7F 26
7F 38
00
61
03 7F
51
49
09
48
01
00
49
19
44
08
61
03 7F
49
49
29
44
04
00
46
36
46
38
04
45 7D
29
11
49
29
45 7D
14
22
48
09
14
41
41
49
44
11
15
14
49
41
49
44
54
21
14
49
41
49
44
54
14
36
22
32
20
20
7D
7F
2A
3E
7F
7F
3C
2A
7F
3E
7F
38
24
18
01
38
04
09
44
14
41
01
44
05
45
12
41
44
44
05
41
01
48
20
79
40
12
10
01
00
7F
3F
3C
3F
7C
38
78
23
27
38
44
15
13
45
49
40
54
40
44
14
08
45
49
40
54
40
38
15
64
45
49
40
54
20
44
78
62
39
41
08
HEXIDECIMAL DATA
7E
3C
1C
4A
7E
2E
3D
1C
7F
38
36
07
08
01
45
49
09
18
20
29
44
56
49
09
60
09
40
20
49
09
18
02
20
10
40
50
30
01
07
00
3C
3E
3C
4A
0B
4D
3C
7F
3C
3C
30
00
01
7F
08
43
71
41
20
14
40
42
07
09
41
18
54
30
49
43
00
05
51
20
54
40
30
00
03
72
7F
7F
3E
7F
60
38
00
36
63
44
50
45
00
49
08
14
08
28
48
44
49
08
08
04
10
50
45
41
49
08
14
04
28
60
38
00
36
63
78
44
7D
1E
3C
3E
7F
3C
1E
00
06
00
03
00
04
04
41
41
49
41
04
44
48
04
40
49
78
30
38
41
00
29
41
04
40
08
40
00
00
03
00
04
the microprocessor software. The
DISPLAY PROCESSOR CON-
TROLLER is a system which
utilizes a dedicated 8048 single
chip microprocessor to provide
these important features. This
controller, as depicted in Figure
18, is a series of printed circuit
board subsystems available from
15
3E
2A
1C
2A
3D
4C
3E
20
61
20
44
49
49
40
49
44
54
49
3F
43
44
38
08
00
42
36
40
51
40
64
40
36
42
00
40
45
38
08
00
00
5B
2A
3E
3B
7F
1C
62
08
08
00
7F
00
00
00
14
08
08
08
00
7F
08
08
14
10
36
10
08
00
22
41
28
41
60
08
08
00
41
41
44
00
7F
3C
7E
7F
1C
40
20
00
00
02
00
00
58
08
40
04
41
00
20
02
38
14
40
08
77
20
02
00
22
40
10
40
00
02
00
41
40
20
00
00
7F
7C
0C
7F
7C
7F
08
12
08
14
41
78
00
19
08
14
02
41
04
41
04
15
08
14
18
36
12
08
14
02
00
04
08
02
00
08
14
00
78
00
7C
7E
3C
38
7F
04
08
44
30
44
08
7F
04
08
04
7F
04
08
48
00
41
22
04
02
08
04
49
30
14
41
00
08
10
02
04
10
42
00
00
78
3E
2A
7C
2A
3E
2A
41 COLUMN
01
20
06
40
38
63 COLUMN
12
10
01
41
40
44
55
55 COLUMN
08
51
41
40
44
49 COLUMN
12
04
09
41
40
44
55
41 COLUMN
01
02
06
40
38
1
2
3
4
5