/
CS101 Storage Information CS101 Storage Information

CS101 Storage Information - PowerPoint Presentation

celsa-spraggs
celsa-spraggs . @celsa-spraggs
Follow
345 views
Uploaded On 2018-11-21

CS101 Storage Information - PPT Presentation

Storage The zeros and ones in the input devices output devices and process devices are in electronic form and are lost when the computer is turned off To preserve the zeros and ones when the computer is turned off they must be sent to storage devices ID: 732120

storage disk file devices disk storage devices file unit 1024 files select bytes type information click state larger icon

Share:

Link:

Embed:

Download Presentation from below link

Download Presentation The PPT/PDF document "CS101 Storage Information" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.


Presentation Transcript

Slide1

CS101

Storage InformationSlide2

Storage

The zeros and ones in the input devices, output devices and process devices are in electronic form and are lost when the computer is turned off.

To preserve the zeros and ones when the computer is turned off they must be sent to storage devicesSlide3

What type of storage devices are there?

Older Storage

Magnetic Devices =

How stores information = As magnetic metal particles with a north an south pole

Optical Devices =

How stores information = Surface reflects back laser or does not

Newer Storage

Solid State Devices =

How stores information = Traps electrons

Hybrid Storage

Combines Solid State and Magnetic

Cheaper

Cloud Storage =

Not stored on your device. Slide4

Bits to Bytes

Computers store information in byte size chunks

A zero or a one = bit

8 Bits = 1 Byte

1024 Bytes = Kilobyte

1024 Kilobytes = Megabyte (1,048,576 Bytes)

1024 Megabytes = Gigabyte (1,073,741,824 Bytes)

1024 Gigabytes = Terabyte (1,099,511,627,776 Bytes)

Etc

Keeps going by a factor of 1024

1024 because computer is a base 2 deviceSlide5

How big is it?

How do I know how many bytes a file is taking up on a disk?

Windows = Right click on the file icon and select

Properties

Macintosh = Right click on the file icon and select

Get Info

How do I know how many bytes fit on a disk and how much of the disk is currently being used

?

Windows = Right click on the disk icon and select

Properties

Macintosh = Right click on the disk icon and select

Get Info

”Slide6

Converting Measurements

To convert a smaller unit to a larger unit divide by 1024 for each level

To convert a larger unit to a smaller unit multiply by 1024 for each levelSlide7

Conversion Practice

You can use the conversion calculator on the following website for practice:

http://www.t1shopper.com/tools/calculate/Slide8

Quick and dirty conversion

In the real world a quick conversion by 1000 will give you enough information

To convert a smaller unit to a larger unit divide by 1000 (or just move the decimal point 3 to the left)

To convert a larger unit to a smaller unit multiply by 1000 for each level (or just move the decimal point 3 to the right)Slide9

How do I prepare a disk for use?

The disk needs to be formatted (initialized)Slide10

How do you format a disk?

In Windows:

Right Click Start > Disk Management

In Macintosh OS:

Open Disk Utility program

Select disk icon on left side of window

Select type of format

Select Erase tab and click on EraseSlide11

What you should know about File Systems

A file system is created on the disk when you format a disk. A file system keeps track of where files are stored on a disk.

Windows uses two types of file systems

1 FAT = File Allocation Table

Older = Less secure and limited disk and file sizes

2 NTFS = NT File System

Newer = More secure and allows larger disks and files

Mac uses APFS (

Apple File System)Slide12

What should I do if a sell my computer, or storage device?

To secure a storage device you need to randomly rewrite the data on the disk.