Which among the following ports is also known as Line Printer Port?

Correct option is A

​The Parallel Port is also known as the Line Printer Port (LPT). It was traditionally used to connect printers to computers, allowing data to be transferred in parallel (multiple bits at a time), which made it faster than serial communication in its early days.

The port is commonly referred to as LPT1, LPT2, etc., where LPT stands for Line Printer Terminal.

Important Key Points:

1. Parallel Port (LPT):
• It was the standard interface for connecting printers before the advent of USB and network-based printing.
• Allows data to be sent 8 bits (1 byte) at a time over parallel lines.
2. Usage:
• Commonly used for dot matrix printers, early laser printers, and scanners.
• Gradually replaced by USB and wireless connections in modern systems.
3. Port Appearance:
• It uses a 25-pin female DB-25 connector on the computer side.

Knowledge Booster:

1. Why Not Other Options?
• b) Video Graphic Array (VGA):
• Incorrect. VGA is a video output port used for connecting monitors to display graphics.
• c) High-Definition Media Interface (HDMI):
• Incorrect. HDMI is used for high-definition audio and video transmission.
• d) Display Port:
• Incorrect. Display Port is a digital display interface used for connecting monitors, similar to HDMI.
2. Parallel Port vs Serial Port:
• Parallel Port: Transfers data 8 bits at a time (parallel).
• Serial Port: Transfers data 1 bit at a time (serial).
3. Interesting Fact:
• The Parallel Port was introduced in the 1970s and was widely used in personal computers during the 1980s and 1990s. It has now become obsolete due to advancements in faster interfaces like USB, Ethernet, and wireless connections.