Question

Q: Which of the following is necessary for the
parallel input-output port
Select one:
a. Inductor
b. Capasitor
c. Pull-up Registers
-
d. Pull-Down Registers​

Answer 1

Which of the following is necessary for the parallel input-output port?

Explanation: The I/O port needs an external pull-up resistor. In some devices, it offers internally. If it is not provided, it can cause incorrect data on reading the port and it prevents the port from turning off an external device.