Hard Drives Ryan2005. What it Does Stores info magnetically hard “platter” holds info.

Slides:



Advertisements
Similar presentations
Hard disk drive. Why is hard disk drive important? holds all the software that runs on your system and all your personal files.
Advertisements

Hard Drives Storing Information 1 Byte at a Time.
Computer Hardware Preview the exam questions. RAM SECONDARY STORAGE CPU.
Introduction to Computers
Hard Disks and I/O Polytechnic University CS /25/03.
1 Introduction to Computers Prof. Sokol Computer and Information Science Brooklyn College.
Computers What’s in there and how does it work?. Parts of a computer  There are many different parts to a computer. Some are inside the large case that.
Intermediate GNVQ ICT Backing Storage Backing storage is used to store programs and data when they are not being used or when a computer is switched off.
Storage and Multimedia: The Facts and More Chapter 6.
Hard Drive / Hard Disk Functions of hard disk
Company LOGO Storage 1 Chapter 6. Storage  Storage holds data, instructions and information for future use.  Storage medium, also called secondary storage,
 Introduction Introduction  Types of Secondary storage devices Types of Secondary storage devices  Floppy Disks Floppy Disks  Hard Disks Hard Disks.
Edited By :Asma AlOsaimi
ASHIMA KALRA.  Hard disks.Hard disks.  Floppy disks.Floppy disks.  CD ROMs.CD ROMs.  DVDs.DVDs.
Hard Drives “ Hard disks store digital information in a relatively permanent form.” --howstuffworks.com.
Hard Drives Non-Volatile Storage. Hard Drives Hard Drives (HD) The primary storage device in a computer system.
Unit 5, Lesson 13 Storage Technologies and Devices AOIT Computer Systems Copyright © 2008–2013 National Academy Foundation. All rights reserved.
1 6 Further System Fundamentals (HL) 6.2 Magnetic Disk Storage.
How Hard Disks Work. Hard disks were invented in the 1950s. They started as large disks up to 20 inches in diameter holding just a few megabytes. They.
CS 111 – Aug – 1.3 –Information arranged in memory –Types of memory –Disk properties Commitment for next day: –Read pp , In other.
 Design model for a computer  Named after John von Neuman  Instructions that tell the computer what to do are stored in memory  Stored program Memory.
Hardware Peripheral Mouse Display Keyboard CPU Disk Drive Floppy Disk Hard Disk Software Word Processing Information Icon User Friendly Bit Byte Kilobyte.
Introduction to Computers
Introduction to Computers
Your Interactive Guide to the Digital World Discovering Computers 2012.
1 Introduction to Computers Prof. Sokol Computer and Information Science Brooklyn College.
1 Introduction to Computers Lect 1 Won’t tell you much you don’t know. (Misleading– the course gets more conceptual as we create webpages.) Will go into.
Components & Mechanism. People & Computers Hard Disk What purpose does it serve?
GCSE Information Technology Storing data Data storage devices can be divided into 2 main categories: Backing storage is used to store programs and data.
STORAGE DEVICES Presentation By: Saurabh Mishra. A data storage device is a device for recording (storing) information (data). CD, Hard Disk and Flash.
TheTeacher Computing Data Storage Computing. TheTeacher Computing Primary Storage One of the fundamental properties of a computer is that it can store.
Binary and Hard Disk Aslin Izmitli PEOPLE Program.
Inside your computer. Hardware Review Motherboard Processor / CPU Bus Bios chip Memory Hard drive Video Card Sound Card Monitor/printer Ports.
Inside your computer. Hardware Motherboard Processor / CPU Bus Bios chip Memory Hard drive Video Card Sound Card Monitor/printer Ports.
A non volatile storage device
GENERAL INFORMATION Invented in 1950's on mainframe computers with 20 inches diameter with only few megabytes of data. Originally called 'Fixed Disc'
Storing data – Storage devices and media. What is a storage device?  A storage device is any device used in a computer to store information.  A storage.
Describing Storage Devices  Storage terms  Media is the material storing data  Storage devices manage the media  Magnetic devices use a magnet  Optical.
COM113 Introduction to Computing Storage. Storage Objectives Differentiate between storage devices and storage media Describe the characteristics of magnetic.
Hard drives use magnetism to store information just like on old cassette tapes. Copper heads are used as they are easy to magnetize and demagnetize.
Storage Hardware Devices Presented by Hector Arreola Valentin Kifumbi Keely Ritchie-Boland.
A disk drive is made up of a platter, an arm with a read/write head at the end of it, some gizmo to move the arm back and forth, and some electronics to.
Living in a Digital World Discovering Computers 2010.
Copyright © Curt Hill Disk Basics Structure and Characteristics of Secondary Storage.
Chapter 3: Where are programs and data Stored?. How important is this chapter to understanding how a computer works? 7 (on a scale of 1-10 with 10 being.
By : Reem Hasayen. A storage device is a hardware device capable of storing information. There are two types of storage devices used in computers 1. Primary.
By : Craig Messenger What do you know about your hard drive? A hard drive stores all the information on your computer. It has a recording device called.
Advanced Computer Applications
Your Interactive Guide to the Digital World Discovering Computers 2012 Edited By :Asma AlOsaimi.
Section 13.2 – Secondary storage management. Index 13.2 Disks Mechanics of Disks The Disk Controller Disk Access Characteristics.
Hardware Introducing the Components of a Computer.
Storage of Data Letts Chapter 6. Introduction Any system needs to store both programs and data and requires: n a main store for fast access storage; n.
Hard Disk Geometry. Physical Sizes ( Also called Form Factor) Hard Drives currently come in 2 main sizes: 2.5” and 3.5” 2.5” Drives are for laptop computers.
1 Components of the Virtual Memory System  Arrows indicate what happens on a lw virtual address data physical address TLB page table memory cache disk.
File organization Secondary Storage Devices Lec#7 Presenter: Dr Emad Nabil.
Chapter 6 Storage By Hussein Alhashimi.
The physical parts of the computer
Backing Store.
Hard Drives.
Computer hardware f1031 – computer hardware.
Inside the computer.
Introduction to Computers
Chapter 7.
Storage in Computers I/O
Secondary Storage Devices
THIS IS Jeopardy. THIS IS Jeopardy With Your Host... Mrs. Glenn.
Hardware.
Introduction to Computers
Junior High Media Studies
5 Backing Storage Backing storage is used to store programs and data when they are not being used or when a computer is switched off. When programs and.
Presentation transcript:

Hard Drives Ryan2005

What it Does Stores info magnetically hard “platter” holds info

Cassette Tape vs. Hard Drive must fast forward or rewind to reach specific point can reach info magnetically

Performance Data is stored in files Most hold gigabytes most can deliver 5-40 bytes per second to CPU

Inside It Sealed aluminum box underneath board-connections for motor that spins platters platters hold info arm holds read/write heads

Tracks and Sectors track is a concentric circle on a platter sector is pie-shaped wedge on track

How it Stores Data Magnetically

Platters Hold info

Arms Hold read/write heads glide over platters and retrieve/change info

“Deleted” Info Hard drive like book: info stored on “pages” and “index” when info deleted, “index” erased of info, but is still on page

More about Deleted Data People can still get info off of computer after deleted unless wiping software is used and drive destroyed

Misc. Info Hard drives invented in 1950s lots of units of measurement for drive bit: unit of 0 or 1 byte: 8 bits gigabyte: 1,000,000,000 bytes yottabyte: bytes

About the Author I am Ryan Minster, and I enjoy playing with Rubik’s Cubes and card games, such as Spades and Poker.

Bibliography “Computer Hardware.” Apr How Stuff Works “How Hard Disks Work.” Brain, Marshall. 25 Apr “Skeletons on your hard drive.” News.com. 3 May 2005.