tailieunhanh - Laptops All-in-One Desk Reference For Dummies- P8

Laptops All-in-One Desk Reference For Dummies- P8: Okay, I’ll admit it: I’ve got a strange biography. I’ve been a writer all my life. My first semi-pro job was sports editor of my high school newspaper. (Go Commodores!) After college I was a political reporter for daily newspapers in Ohio and New York (I covered four national nominating conventions and two Presidential campaigns) and a correspondent for The Associated Press. And then, in 1983, I gave in to my inner geek and became the first Executive Editor of PC Magazine, back in the days when most people asked, “What is a PC?”. | 44 Feeling the Need for Speed Intel s current families of laptop CPUs also include in order of most to least powerful Intel Centrino Duo which is based on the Intel Core 2 Duo used in desktops a quad-core version of the processor is expected in 2008 based on four-processor CPUs offered for desktops. Intel Centrino which is a variation of the Intel Pentium 4. Intel Celeron which is at the low end of the company s product line today. Figure 3-1 Hidden within a plastic cover and mounted on the motherboard encased within the shell of your laptop is its microprocessor. AMD s families of laptop CPUs includes AMD Turion 64 X2 Dual-Core processor as with Intel a quad-core version is due. Mobile AMD Athlon is a mid-level processor. Mobile AMD Sempron is another mid-level processor. You ll have a hard time finding processors made by companies other than Intel or AMD on current mainstream laptops. Like it or not Intel CPUs are the standard and AMD is the only major manufacturer whose processors are essentially completely compatible with operating systems and software designed for Intel-based systems. If you re offered an alternative make certain it supports whatever operating system you choose to use. Feeling the Need for Speed 45 Taking a Walk down memory lane If the microprocessor is the engine RAM is the factory floor. Although memory chips are tiny about the size of a fingernail they contain a huge amount of real estate within. Book I Chapter 3 Think of a memory chip as a very large chalkboard divided into millions or billions of tiny cells. Each cell has an address like a house on a street. An index keeps track of which particular bits of information 0s and 1s are placed where. While I m writing these words on my computer they are resident in a section of RAM as individual characters at the same time the microprocessor works with the graphics processor to create the information that allows the LCD screen to display a picture of all the characters using specific fonts and