Which statement is incorrect related to the 8051 I/O Ports

  1. Port 0 has open drain outputs
  2. Ports P1, P2, and P3 have internal pullups
  3. Port 0 internal pullups are not active during normal port operation
  4. Ports P1, P2, P3 can support up to 12 LS-TTL inputs
Anurag Mishra Professor Asked on 13th January 2016 in Computers.
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