Basic PC Anatomy
Understanding the Software Layers of a Computer
You select File | Print in the menu and the printer comes to life, feeding out a copy
of your document on paper. It seems like a simple process, but in reality your request
passed through many layers of software before reaching your printer. More ...
How Does a Laptop Battery Work?
There is little difference in how a laptop battery works and how other device batteries work,
except that a laptop battery is more intelligent. An electronic circuit works with the laptop
hardware to manage the power that flows into the battery while recharging and the power that
flows out of each cell of the battery while discharging. More ...
How Does the CPU Cache Work?
CPU's however use a 2 level cache system. The principles are the same. The level 1
cache is the fastest and smallest memory, level 2 cache is larger and slightly slower
but still smaller and faster than the main memory. More ...
Hard Drives - ATA versus SATA
with data rates hitting the 133MB/sec mark the parallel ATA standard is maxing out,
thus industry leaders got together and came up with a new standard known as Serial ATA (SATA). More ...
All About Your Computer's BIOS
Are you confused by the computer BIOS? The BIOS is a fundamental component of any PC
and if you really want to get into the guys of a computer, it?s good through understanding
what BIOS Is all about. More ...
USB requires peripherals to be connected to the PC with cables. Some PC users feel they can be more productive if they could get rid of those cables. This has resulted in the introduction of several short range wireless connection technologies. More ...
MPEG4, H.264, MJPEG Compression for DVR Recording - What's the Difference?
The main objective of Video compression is to have the smallest file size possible while still preserving good video and audio quality. MPEG4, H.264, and MJPEG are three DVR CODECs that aim to compress the videos for transferring purposes. Each of these formats have their own strengths and weaknesses. More ...
Anatomy of a Hard Drive
A hard drive contains a spinning metal disk. The surfaces of the disk have a magnetizable
coating. An actuator arm with a read/write head on its end is passed over the surface of
the spinning disk. 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 ...
PC Motherboard Expansion Cards
The expansion slots available on motherboards allow for a variety of upgrades in a
computer system, but matching the appropriate card to an available slot needs to be
addressed before making any purchasing decisions. The most common types of expansion
cards for modern computer systems can be broken down into three formats: PCI, AGP, and PCI Express. More ...
How is Data Written, Stored On, and Erased From Hard Disks?
Inside your hard disk is a stack of one or more optically perfect platters where data
is stored magnetically. When the drive is originally formatted, it is laid out in a
pattern of concentric circles ("cylinders") and wedges (sectors). More ...
Understanding Graphic Cards
Dedicated graphics cards, which we will be discussing in this article, are needed if you want to do 3D gaming or watch high definition movies. The GPU (Graphic Processing Unit) is the most determinant feature of every graphics card when it comes to the overall performance and speed. More ...