Basic PC Anatomy
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 ...
CompTIA Strata Study Guide
Because many jobs in the IT field don't require the in-depth knowledge required for CompTIA A+,
CompTIA Network+ or CompTIA Security+ certification, CompTIA has developed the Strata certification. 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 ...
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 ...
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 ...
Pentium P5 Processor
The Pentium P5 processor was introduced in 1993 was the first superscalar processor. It featured
two integer pipelines and a pipelined floating-point unit. This article describes other innovations introduced in the P5. 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 ...
Intel's Core 2 Processors
Intel's Core 2 processors, released in July of 2006, are based on the "Core microarchitecture",
a dual core design using a 65nm manufacturing process to put 291 million transistors
on a 143 square mm die. Each core has its own 64KB L1 cache. The two cores share an L2
cache that can be either 2MB or 4MB. More ...
Understanding PC Data Buses
Physically, a "data bus" is the connection between the CPU and other devices on the PCs
motherboard. A data connection can be "serial" or "parallel". The data bus used in
first-generation PCs used 8-bit architecture. PCI Express uses switched serial connections. More ...
Binary Number Representation and Binary Math
Computers perform all of their amazing work with only two voltage levels, one representing binary 0,
the other representing binary 1. This article describes how to perform binary addition and subtraction. More ...
Power Supply Form Factors
The shape and physical layout of a power supply is called its "form factor". Power
supplies come in several industry standard form factors. Power supplies with the same
form factor are physically interchangeable. More ...
Intel's Core i7 Processors
Core i7 is a family of Intel quad core processors, that is, they have four processors on
a single silicon chip. All four processor cores and all memory caches, including a 64K L1
cache, a 256K L2 cache, and a shared L3 cache are located on one chip. The memory is also
located on the same chip. More ...