Hardware Secrets
Home | Camera | Case | CE | Cooling | CPU | Input | Memory | Mobile | Motherboard | Networking | Power | Storage | Video | Other
Content
Articles
Editorial
First Look
Gabriel’s Blog
News
Reviews
Tutorials
Main Menu
About Us
Awarded Products
Datasheets
Dictionary
Download
Drivers
Facebook
Links
Manufacturer Finder
Newsletter
RSS Feed
Test Your Skills
Twitter
Newsletter
Subscribe today!
Recommended
Parallel Port Complete: Programming, Interfacing, & Using the PC's Parallel Printer Port
Parallel Port Complete: Programming, Interfacing, & Using the PC's Parallel Printer Port, by Jan Axelson (Lakeview Research), starting at $0.01


Home » Motherboard » Bus
How To Build Parallel Port Prototypes
Author: Gabriel Torres 146,022 views
Type: Tutorials Last Updated: October 13, 2005
Page: 1 of 7
Introduction

The computer parallel port is the easiest way to control devices outside the PC, like LEDs, lights and even home appliances. In this tutorial we will teach you how to use the computer parallel port to control circuits outside your computer.

The greatest thing about printers nowadays is that they use USB connection. Thus, on the majority of modern PCs the parallel is not used, so it is available for us to use it to control circuits outside the computer box.

In fact the idea behind parallel port is really simple. It is an 8-bit parallel interface, so you have eight bits available there. Simple put, since each data bit can be set as either ”0“ (”turned off“) or ”1“ (”turned on“), we can directly turn on or off up to eight devices, like LEDs, lights and even home appliances. You can connect LEDs direclty to the parallel port and play with them – actually that is exactly what we are going to do in this tutorial, since this is the best way to learn how to use the parallel port. But for ”heavier“ circuits like lights and home appliances, you will need to build a power circuit, because the computer parallel port is not capable of driving enough current to deal with such devices. We’ll explain how to build this kind of circuit as well.

Building Parallel Port Prototypes
click to enlarge
Figure 1: Connecting LEDs to the parallel port.

Print Version | Send to Friend | Bookmark Article Page 1 of 7  | Next »

Related Content
  • Computer Port Extension
  • Why Serial?
  • Installing Frontal USB Ports

  • RSSLatest Content
    ASRock Z97 Anniversary Motherboard
    December 16, 2014 - 4:27 AM
    Gigabyte H81M-S2PH Motherboard
    December 12, 2014 - 3:05 AM
    Aerocool Dead Silence Case Review
    December 2, 2014 - 3:00 AM
    NZXT S340 Case Review
    November 27, 2014 - 3:45 AM
    AMD A4-5000 CPU Review
    November 26, 2014 - 3:10 AM
    Samsung Galaxy Note Pro 12.2 Tablet Review
    November 25, 2014 - 3:00 AM
    ASUS X99-PRO Motherboard
    November 5, 2014 - 3:00 AM
    ASRock QC5000-ITX Motherboard
    November 4, 2014 - 3:00 AM
    Gigabyte X99-UD3 Motherboard
    October 30, 2014 - 8:30 AM







    2004-14, Hardware Secrets, LLC. All rights reserved.
    Advertising | Legal Information | Privacy Policy
    All times are Pacific Standard Time (PST, GMT -08:00)