This board buffers signals
coming out of the parallel port and into the breakout board. It forces hard EPP
signal output. This prevents problems caused by new parallel ports that deliver
low amperage signals. This board could fix problems with old CNC4PC boards, or
• Supports IEEE 1284 Standard.This board
supports IEEE 1284 Level 1 standards for bidirectional parallel communications
between personal computers and
• Output pins: 1, 14, 16 and 17.
• Input pins 10, 11,
12, 13 and 15.
• Buffered outputs. Outputs are buffered,
allowing the card to output the signals without using the power from the
parallel port. It
can take the +3.3 or +5vdc signals from the parallel port
and deliver solid +5vdc at 24 milliamps.
• Easy upgrade for
setups. Upgrade the system just by plugging in the
board and not touching the rest of the wiring.
• All TTL +5VDC or
+3.3VDC Signals. Works with newer computers and laptops that have
low voltage parallel ports.
• Internal Enable for Outputs.
An internal circuit detects when the board is connected to de parallel
port to prevent undesired high
state output pins. If the board is all
outputs are disable.
• DB25 Male output connector. This
connector allow the board be directly connected to the breakout board