Basic PC Anatomy
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 ...
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 ...
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 ...
Direct Memory Access (DMA)
In early computers, all data transfers required the processor to read and write single
words from memory until the entire transfer is complete. With DMA, the DMA controller
takes control of the system buses to move data between the device and main memory. More ...
How Hard Disks Work
A hard disk drive consists of several main components. The first is one or more thin disks
that spin at anything from 3650 to 15000 RPM. The second major component is the head assembly
which consists of record/playback heads mounted on arms which pivot so that the heads can
be placed over any of the tracks. More ...
Interrupt Request Lines (IRQs)
What happens when the CPU (Central Processor Unit) is busy doing something, like defragmenting
the hard disk, and you press a key on the keyboard? An interrupt (IRQ) is a connection between
a hardware device and the CPU. A hardware device uses it's assigned IRQ line to signal or interrupt
the CPU when it needs attention. More ...
To a large extent the operation of a microprocessor involves loading, transferring, and manipulating the contents of registers.
In this article you learn about the functions, and purposes of the register set of the Intel 8086 microprocessor. 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 ...
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 ...
FREE Ebook - Computer Geeks Tech Tips
Everybody is looking for help, tips, or basic information and instructions about motherboards, power
supplies, hard drives, and technologies like RAID, wireless networking, and bluetooth. This eBook
provides that important informmation. 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 ...
Basic Computer Architecture
Computers today, even that PC on your desk are unbelievably complex. You can't understand
computers without an understanding of the basics. In this article I explain basic computer
architecture in simple, basic terms. More ...