Bing found the following results
Parallel port - Wikipedia
What is a Parallel Port? - Computer Hope
Parallel Port Basics - How Parallel Ports Work | HowStuffWorks
Introduction to Parallel Ports and Devices - Windows drivers
How does a computer's parallel port work? | HowStuffWorks
Parallel Port Definition - What is a parallel port? - TechTerms.com
SPP/EPP/ECP - How Parallel Ports Work | HowStuffWorks
What is a parallel port? - Lenovo US
What Is a Parallel Port? | phoenixNAP IT Glossary
What is Parallel Port? | Webopedia
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