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Use 74LS245, an octal buffer, It has two control lines which you can control from the output data pins from your parallel port. If your are getting data from outside to your PC, you can connect the output of your buffer to input pins of the port. Note there are only 5 input pins of teh port.
A much more elegant solution is using teh ECP capabilities of teh port where your data pins can act as bidirectional pins. by default the data pins are output pins.
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