Interface Description
7.2Parallel Interface
The
Instruction of parallel interface as follows:
Technical Character: |
| |
• | Compatibility: | CENTRONICS |
• | Logic circuit: | TTL |
• | Data format: | 7 or 8 bits |
• | Logic level: | 0 - 5 V |
• | Connector: | 36 pins |
All the input and output signal was connected to a 5V voltage by a 2.2k ohm resistance Interface signal:
7.3USB Interface (in preparation)
• USB characters
• | Type: | terminal |
• | Reference standard: | Universal Serial Bus |
• | Transmission speed: | $ 200 kbps |