Computer Buses

A bus, or computer universal switch, is essential for data transfer within a computer or between more than one. We'll take a look at topics like PCI, SCSI, USB Ports and serial ports.


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PCI Express Image Gallery

PCI Express is a serial connection that operates more like a network than a bus. Take a look at these PCI Express pictures to learn more.

What is the main difference between FireWire and USB?

Both FireWire and USB are technologies used to quickly transfer data. Learn about the main difference between FireWire and USB in this article.

What's another name for FireWire?

FireWire, or IEEE 1394, is a technology used to transfer data quickly. Learn more about FireWire in this article.

How Light Peak Works

Computers and peripherals haven't always communicated with one another the way they do now. But there's an even faster standard on the horizon, called Light Peak. What makes this new technology so speedy?

How PCI Express Works

PCI slots are an integral part of a computer's architecture, but they have some shortcomings. Now there's a protocol that provides more bandwidth and is compatible with existing operating systems. Find out about PCI Express.

How AGP Works

Movies play, pop-ups pop, and video games fill the screen, immersing you in a world of 3-D graphics. Today, every aspect of computing uses lots of graphics. The Accelerated Graphics Port enhances the performance and speed of graphics hardware. Find o

How accessDTV Works

This special PCI card lets you access digital television on your computer monitor, and you're still free to surf and run whatever programs you want. Here's how to get started.

How SCSI Works

A computer is full of buses -- highways that take information and power from one place to another. While USB is good when utilizing small electronic devices, sometimes you need something bigger. That's where SCSI comes in.

How PCI Works

Essentially, a bus is a channel or path between the components in a computer. And having a high-speed bus is as important as having a good transmission in a car.

How IDE Controllers Work

The Integrated Drive Electronics interface is the most popular way to connect a hard drive to a PC. Find out where IDE came from and how it works today.

How Serial Ports Work

The serial port was an integral part of most computers for more than 20 years, but new computers usually have USB connections instead. Serial ports are still used for most modems, as well as a few other electronic devices.

How Parallel Ports Work

OK, so they're not as popular as the USB port these days. But the parallel port is still a very common way to connect a printer to a PC. Learn how parallel ports operate and how they came about.

How do I add a USB device to my computer if I am out of ports?

Running out of USB ports is annoying, but it doesn't have to stop you from adding components to your computer. Check out this list of USB accessories and learn how to get them connected.

How does a computer's parallel port work?

Computers send data through parallel ports, serial ports, or network connections. How does a computer's parallel port work? And how can I design things to attach to a parallel port?

How USB Ports Work

You can find Universal Serial Bus connectors on just about every PC made today. But when it was introduced, USB was leaps and bounds ahead of the technologies it replaced. What makes this standard so useful?