PC Hardware A Beginner’s Guide

Adding cache memory to a system is like adding a refrigerator to your situation. If you were able to purchase a six-pack or a ca ...

Sizing Your Cache As you may have guessed: when it comes to cache memory, more is better. However, you may have also guessed tha ...

of all data requests. Therefore, replacing your memory with new memory that is 100 per- cent faster would gain you about a 5 to ...

cache systems include a burst timing in their specifications. None of the numbers in the burst timing are as important than thei ...

second block of the burst begins transferring before the first block is completed, and so on for the third and fourth blocks. In ...

Most high-end Pentium processors use a nonblocking cache for L2 data store. For example, the Pentium Pro and Pentium II micropro ...

the standard for COAST modules. Different manufacturers vary their size, especially the height and makeup. For example, Motorola ...

socket,linethemodulealongsideofthesocket,properlyoriented,andvisuallymatchthe pins of the module’s edge-connector to the socket’ ...

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CHAPTER 9 Hard Disks and Floppy Disks 169 Copyright 2001 The McGraw-Hill Companies, Inc. Click Here for Terms of Use. ...

(^170) PC Hardware: A Beginner’s Guide V irtually every PC sold today has at least one hard disk drive installed inside its syst ...

Chapter 9: Hard Disks and Floppy Disks^171 it encloses form what is called theHead Disk Assembly (HDA). The HDA is a sealed unit ...

(^172) PC Hardware: A Beginner’s Guide Theglassplattersaremorerigidandassuchcanbelessthanhalfasthickasthealumi- num disks. A gla ...

Chapter 9: Hard Disks and Floppy Disks^173 The Spindle Motor The disk platters are mounted to aspindleseparated bydisk spacersth ...

(^174) PC Hardware: A Beginner’s Guide the HDA case. The spindle disk motor is designed to prevent oil or dust from contaminatin ...

There are two types of media used on hard disk platters:
Oxide media  Thin film media Oxide Media Oxidemediais less popular o ...

all of the other read/write heads are over track 29 on each respective disk. Disk organiza- tion and tracks are discussed later ...

Chapter 9: Hard Disks and Floppy Disks^177 area of the platters, where the read/write head can safely “crash” when the disk is p ...

(^178) PC Hardware: A Beginner’s Guide When the energized head passes over the recording media of the platter, the magnetic fiel ...

Chapter 9: Hard Disks and Floppy Disks^179 Because the read/write head only sends a signal on a flux transition, a device called ...