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What are the conditions which are necessary for using a parallel port? 1. Initializing by placing appropriate bits at the control register 2. Calling on interrupt whenever a status flag sets at the status register 3. Interrupting servicing (device driver) programming Select the correct answer using the code given below.

What are the conditions which are necessary for using a parallel port? 1. Initializing by placing appropriate bits at the control register 2. Calling on interrupt whenever a status flag sets at the status register 3. Interrupting servicing (device driver) programming Select the correct answer using the code given below. Correct Answer 1, 2 and 3

Parallel Port:

  • It is a programmable hardware interface that is used to connect peripheral devices.
  • The parallel port is capable to send and receive multiple bits of data.
  • It is used for parallel communication purposes because spaced of Transmission of data is higher.


Conditions to use parallel port include:

1) Control of action either Read or write must be initialized by placing appropriate bits at the control register.

2) Send interrupt to CPU and receive an acknowledge signal to start the action.

3) Interrupt service routine must be run to control the transmission.

4) Status flag resets when the transmission is over.

Important points:

  • The serial port is also used to connect peripheral devices
  • Bit by bit data transmission is done by serial Pert
  • Used for serial-mode of communication.

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