CSci 105

Introduction to Computers

Lecture 15

© Morris Firebaugh



I. Introduction

A. Chapter 5: Storage and Multimedia

B. File Structure

C. Magnetic Disk Devices

D. Magnetic Tape Devices

E. More on ArtWorks



II. The Benefits of Secondary Storage

In this chapter we study mass storage.

 

 

 


III. File Structure

Concept of mass storage


Structure of files includes


Consider the Logical File structure of a database file


So, to summarize File Structure, from smallest to largest


We should distinguish between Logical and Physical records

 


Three types of physical file organization


IV. Magnetic Tape Devices

Magnetic Tape was the first really effective mass storage medium


Primary function for present-day magnetic tapes --> Backup

 


V. Magnetic Disk Devices

The problems with tapes


Magnetic disk devices help solve these problems

Floppy (flexible) drives

Hard Drives

Data expands to fill any hard drive

 

 


VI. More on Photoshop 2D Graphics Program

 




 

Updated March 5, 2001