Hp TC4100 Manual do Utilizador descarregar pdf (Página 19)

17

Chapter 2 External Connectors

Parallel Port

a. All data bits are sent to a printer in an 8-bit parallel format.

b. The signal is active low.

8 Clear to send

9 Ring indicator

Table 2-3. Parallel Port Signal Description

Pin Number Signal Description Pin Number Signal Description

1 Strobe5 10

Acknowledge

b

2 Data bit 06 11 Busy

3

Data bit 1

a

12 Paper end

4

Data bit 2

a

13 Select

5

Data bit 3

a

14

Auto line feed

b

6

Data bit 4

a

15 Error1

7

Data bit 5

a

16

Initialize printer

b

8

Data bit 6

a

17

Select in

b

9

Data bit 7

a

18-25 Signal ground

Table 2-2. Serial Port Signal Description

Pin Number Signal Description

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 129 130

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