Supports

Monday, December 24, 2007

USES:

USES:
In summary, the printer port affords a very simple technique for interfacing with external circuitry. Twelve output bits are available, eight on the Data Port and four on the lower nibble of the Control Port. Inversions are necessary on three of the bits on the Control Port. Five inputs are available on the Status Port. One software inversion is necessary when reading these bits.

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