1G, 2G, 3G, and 4G Cellular Wireless Standards
The meaning of the terms 3G and 4G have been made very confusing because some wireless carriers have built new high-speed 4G networks from the ground up while other wireless carriers have chosen to doctor-up their 3G service and market it as 4G. More ...
Hardware Resources Explained
Hardware devices, such as modems, network circuits, sound circuits, and so on, require system resources such as Interrupt Request (IRQ) lines, Input/Output Port (I/O) addresses, Direct Memory Access Channels (DMA), and a range of Memory Addresses for storing code and data. Each device needs its own set of resources. If two devices attempt to use the same resource, your system may lock up or crash. More ...
Build Your Own Computer
Before you begin make sure you have all the tools you need and a clean space to work. Make sure you have all required tools and materials. Unpack the materials once package at a time and inspect them to make sure they are not broke or defective. More ...
The Computers Back Connector Panel
So although the computer's back panel appears to be a complicated mess, each connector has a specific shape, number and pins, and polarity key that allows only the proper cable to be plugged in. If you get a nice comfortable feeling like your not smashing pins when you plug a cable in, then you can feel secure that nothing will blow up. More ...
What is USB OTG?
USB is wonderful because it allows you to connect and disconnect devices from the computer without rebooting the computer. However, wouldn't it be even more wonderful if two USB devices, like a digital camera and a storage device could connect to each other directly? That's what USB On-The-Go (OTG) does. More ...
Introduction to Operating Systems
An operating system is software that acts as an intermediary between a computer user and the computer's applications and hardware. An operating system can be viewed as a resource allocator. Resources might be CPU time, memory space, file storage space, and input/output (I/O) devices. More ...
Advanced Micro Devices (AMD) Chipsets
Although most people think the microprocessor is the most important part on a computer's motherboard, the 'chipset' is equally important. With the introduction of the Athlon processor, AMD gained the technilogical lead. AMD processors and chipsets have always held the advantage in value. More ...
Hard Disk Drive Basics
On a hard disk, data is stored in thin, concentric bands. A drive head, while in one position can read or write a circular ring, or band called a track. There can be more than a thousand tracks on a 3.5-inch hard disk. More ...
Tips and Techniques For Building Your Own PC
What do you need to build a computer? Believe us, it's not as complicated as it seems. Let's start with the case. The variety is staggering, with hundreds of styles, shapes and sizes available. We recommend that you look closely at the features. Some gorgeous PC cases are nightmares to work with, or are cheaply built. More ...
CompTIA A+ Training Kit - Safety Issues
When working on computers it's important to pay attention to safety considerations. CompTIA A+ Training Kit teaches computer safety issues as required for CompTIA A+ certification. More ...
PC Keyboards
Today, there are many keyboard variations. Some keyboards have an integrated pointing device such as a trackball. Ergonomic keyboards are designed to be more comfortable for the hands and wrists. Regards of the variations, all keyboards, except those on notebook computers, follow the 105-key standard. More ...
How to Build Your Own PC - The Smart Way
So you think you can build your own PC? A little knowledge is a dangerous and expensive thing if it all goes wrong. This article dissects a PC build component by component illuminating the points about which you need to make wise choices. More ...
How does a CD Burner work?
The CD burner or more commonly known as the CD writer has become a standard part of the PC today. But how does the CD writer actually work? More ...
Understanding Your PC's CPU Clock Speed and Front Side Bus
The CPU or Central Processing Unit is the brains of any computer and the two major manufacturers are Intel and AMD or Advanced Micro Devices. For many years Intel CPUs were found in nearly all PCs. And now the Intel is found in most systems but the newer Athlon class CPU from AMD have taken a large chunk of the CPU market. More ...
