Central Processing Unit (CPU)
Inside the computer case, hidden amongst all the wiring and gizmos, is a particularly important part of the computer known as the central processing unit (or CPU, for short). The…
Upgrading a Computer
When you upgrade a computer, you usually replace older components with newer components to improve the computer’s performance. You can also upgrade a computer by adding additional components, such as…
Computer Performance
Wondering why your neighbor’s computer is so much faster than your computer? There are a number of reasons why a computer may run faster or slower. You learn about each…
Memory Cache
A memory cache increases a computer’s performance by storing the most recently used data. There are two types of cache: · Internal Cache (also called primary or L1 cache) When the…
Common Types of Expansion Cards
v An expansion card plugs into a computer‘s motherboard to give it additional capabilities. v A computer communicates with its expansion cards and devices through the system bus. v How much information flows…
System Bus and Expansion Cards
You’re furious! You just bought an expensive digital camcorder only to find out that it can’t connect to your computer because your computer apparently doesn’t have a Firewire port. Don’t…
The Back of a Computer (Ports)
When you look at the back of a computer, you may feel a bit overwhelmed by all the slots and holes. Fortunately, manufacturers have added some fairly standard icons and…
The Inside of a Computer
Now that you know what’s on the outside, let’s crank open that mysterious computer case and look inside. But no tools required—we’ve done all the work for you. Just compare…
Types of Operating System
Real-time Operating System: It is a multitasking operating system that aims at executing real-time applications. Real-time operating systems often use specialized scheduling algorithms so that they can achieve a deterministic…
