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Interface Description
7.2
Parallel Interface
The PR 9 parallel interface according to IEEE 1284-1994 standard, support SPP, nibble,
byte protocol.
Instruction of parallel interface as follows:
Technical Character:
S Compatibility:
S Logic circuit:
S Data format:
S Logic level:
S Connector:
All the input and output signal was connected to a 5V voltage by a 2.2k ohm resistance
Interface signal:
7.3 USB Interface (in preparation)
S USB characters
S Type:
S Reference standard:
S Transmission speed:
7-2
CENTRONICS
TTL
7 or 8 bits
0 - 5 V
36 pins
terminal
Universal Serial Bus
200 kbps
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