Basic PC Anatomy
The PC (PCMCIA) Card
The PC card, technically called the PCMCIA Card is a form factor of a peripheral interface
designed for laptop computers. It was originally designed for computer memory expansion. More ...
The video circuits of a computer take digital data and arrange it for display on a screen.
In the past, PCs used CRTs (Cathode Ray Tubes) for video display. Today's PCs use LCDs
(Liguid Crystal Displays). Whether the display is CRT or LCD, the image is created with
a matrix of dots (called pixels for picture elements). More ...
Intermediate PC Build-it-Yourself Guide
Before you get out your tool kit and put your anti-static mat on the floor, you have
to consider a few factors before embarking on your computer-building odyssey? Now don't
panic - it's not as complicated as it seems. More ...
The Chemistry of Laptop Batteries Explained
Laptop batteries come in all shapes and sizes also differ in their chemical composition. The
chemistry of a battery refers to the chemical make-up of the cells inside the outer casing.
This artilce explains the most common chemistries used in laptop batteries. More ...
How Does Wireless Internet Work?
Just as we broke free from phone lines, we can now access the Internet from just
about anywhere via a wireless connection. Wireless Internet access is really much
simpler than most people think. This article briefly explains how it works. More ...
Program Flow Charting
Depending upon the language used, program code my be difficult for humans to
read and understand. However, one type of programming that is very easy to
understand is flow charting. More ...
A motherboard, also known as a main board, is the primary circuit board inside of a
computer, and is where the central processing unit (CPU), memory, expansion slots,
drives, and other peripheral devices are connected. More ...
Basic Computer Thermodynamics
Picture the CPU of a computer cooking away because the designer wants to push too
much power through a small piece of silicon. If we don't take away that heat as fast
as it's created, that CPU will fry! 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 ...
Introduction to Microprocessor Programming
Assembly language involves using instructions that are mnemonics called opcodes, along with values and/or
addresses in hexadecimal notation. To make learning as easy as possible, we'll first learn how to program a
simple microprocessor, the 6502. More ...
Stored Program Architecture
Almost every computer system ever made is based on the stored program architecture designed in 1945 design by the mathematician John Von Neumann. He described a system where data and instructions would be stored in memory. 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 ...