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Computer Anatomy

SDRAM Types: DDR, DDR2, DDR3, DDR4
With computer memory modules, DDR stands for Double Data Rate because it performs two transfers per clock cycle, the number after DDR specifies other characteristics like latency, speed, and voltage. More ...

Anatomy of a Liquid Crystal Display (LCD)
Color LCD displays have a sandwich-like structure. One layer of the sandwich has liquid crystal between two glass plates. One glass plate has a matrix of thin film transistors on it. Liquid crystals move depending upon the charge applied to a tiny capacitor by its related transistor. More ...

How to Build a Computer
Branded computers can offer both value and performance, yet parts are often short-spec in one place or another. Sadly you'll often get a performance "bottleneck" such as a slow graphics card, only a basic amount of memory, or a slimline motherboard with too few upgrade slots. Luckily, computers are surprisingly easy to build. More ...

CPU Sockets Roundup
For current and upcoming motherboards, the PGA package is being replaced by the LGA (Land Grid Array) package. With a LGA the pins are on the socket and they make contact with gold-plated copper pads on the processor. More ...

Five Types of HDMI Cables
There are different types of HDMI cables, some are technologically more enhanced and some are designed for specific PCs and TVs, so it's important that you get to know about the various types. More ...

Video - How to Buy a Motherboard
In this video James, computer hardware training coordinator for Interconnection, shows you how to buy a motherboard. There are a few things you want to keep in mind when buying a motherboard, like Will the motherboard support 64-bit processors? More ...

Windows Registry Basics
The Windows Registry is a database that stores information about the system, including; installed hardware and its configuration, device drivers, network settings, installed applications and their configuration, and the configuration of each user's desktop. To maintain your own computer, you will need to become familiar with the Registry. More ...

The Hard Disk Drive vs. The Solid State Disk
Much has been written about solid state disks (SSDs) becoming the next big thing1 in the IT industry. But as to whether or not we have enough knowledge of how it will revolutionize the industry is a different question. How much do we really know about SSDs? More ...

The Master Boot Record (MBR)
The Master Boot Record, created when you create the first partition on the hard disk, is probably the most important data structure on the disk. It is the first sector on every disk. The location is always track (cylinder) 0, side (head) 0, and sector 1. More ...

Introduction to Operating Systems
An operating system is software that acts as an intermediary between a computer user and the computer's applications and hardware. An operating system can be viewed as a resource allocator. Resources might be CPU time, memory space, file storage space, and input/output (I/O) devices. More ...

General Overview Of Motherboards
Everyone hears the term motherboard and wonders exactly what it is? The motherboard will contain connection points for your CPU (Central Processing Unit), Hard drive, RAM (Random Access Memory), Video Card, and Power Supply. More ...

Basic PC Anatomy Inkjet Printers
There are two main inkjet technologies, thermal and piezo-electric. Thermal technology uses silicon wafer heating elements, Epson uses a proprietary piezo electric technology. 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 ...

PC Technician Street Smarts: A Real World Guide to CompTIA A+ Skills
Hit the ground running with the street-smart training you'll find in this practical book. Using a 'year in the life' approach, it gives you an inside look at the common responsibilities of PC Technicians, with key information organized around the actual day-to-day tasks, scenarios, and challenges you'll face in the field. More ...

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