Basic PC Anatomy
PC Sound Circuitry
Actual physical sound is an analog phenomenon while the computer is digital. To output
a sound stored on a computer disk to a speaker the sound circuit uses a digital-to-analog
converter. Sound input to the computer for recording uses an analog-to-digital converter.
So PC sound circuitry is primarily an AD/DA-converter or a "coder/decoder", usually
shortened to "codec". More ...
Power and Your PC
The power coming into a computer is the most critical component, and it may be one of
the most overlooked. It is just taken for granted that it will always be there and working properly. More ...
IEEE 1284 Parallel Port
The parallel port was primarily used to connect a printer to a PC. Today,
the parallel port is obsolete, being replaced by the USB port. Although now obsolete,
millions of parallel port printers were manufactured and no doubt many of them are still
in use today. I'll briefly describe the it in this article because you may run into a
question about it in the CompTIA A+ Certification Exam. 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 ...
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 ...
Serial ATA Hard Drive
New computers will begin using the SATA (Serial ATA) interface to the hard disk. Some
new motherboards come with built-in SATA support. The SATA interface does not use
a ribbon cable. Instead, it uses a cable similar to a network cable with only seven wires. More ...
Device Driver Basics
In this article, I'm going to reveal in plain English what a driver is, why we need
drivers, and exactly where the drivers are hiding. To give you a basic understanding,
I'm going to go back, way back, to the early days of computers. More ...
PC Disk File Systems
The first PC file system, called FAT because it used a File Allocation Table,
was developed in the early 1980?s for floppy disks. The File Allocation Table,
a map of the location of files on the disk, is located near the beginning of the disk. More ...
Intoduction to Digital Electronics
The entire field of computer technology relies on transistors. This article describes how transistors
are constructed and how modern MOSFETs are combined to make digital logic circuits. More ...
CPU Cache Basics
After the processor accesses a location in memory, there's a high probability that
the next location in memory that it will access is in the same area of memory. So
to make the computer run faster, a a smaller, faster memory called a "cache" is
placed between main memory and the processor. More ...
The Computer's Chipset
A computers memory and peripheral ports connect through two highly integrated chips called
simply the chipset. The chipset consists of a northbridge chip and a southbridge chip. 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 ...