academy2
TRANSCRIPT
Session 2 Desktop, Laptop, Tablet, Smartphone Which Should I Choose?
It Depends on…
•The User Interface
•The Operating System
•The Apps
and what you want it for!
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Introduction
tell you “Click X to do Y“
teach you step-by-step how to send an email/Skype your son/etc
advise you on the best computer
etc…
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Why Not?Because nobody can remember that stuff
It will be different next week
Everyone’s needs are different
“I can’t be bothered with all this medical stuff, show me how to do brain surgery”
These Sessions Will Not:
IntroductionShow you HOW to be comfortable with new technologies
Show you WHY the new ways may be advantageous for you
Help overcome the fear
Accept change
By Explaining the jargon
Introducing the concepts
Getting you to think “Oh, this is like…”
Showing you can’t “break” a computer… usually
These Sessions Will Try to:
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But Why Do They All Seem Different?The User Interface
The Apps
The Operating System
The Jargon
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What Is The User Interface?Its a special set of Apps that handle:
The display
The keyboard
The mouse
The icons
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What is an Icon?It is a SHORTCUT to an App
Can be placed on the screen where you like
Is NOT the App
Many/most Apps do not have an Icon
If clicked will start an App OR redisplay an App
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What is a User Interface (UI) - Microsoft
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DOS Windows 3 MS Bob
Windows XP Windows 7 Windows 8
What is a User Interface (UI) - Apple
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Mac Term Macintosh Mac OS 9
Mac OS X 10-10 “Yosemite”
What is an Operating System?
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A Collection of Apps
What is an Operating System?
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A Traffic Cop
What is an Operating System?
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A Librarian
What is an Operating System?
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A Cook
The Operating Systems Command line
DOSDisk Operating System
Unix - Uni-Information and Computer System
Linux Linus Torvald’s Unix
Graphics and Pointer Windows MacintoshX-serverIOS - iPhone and iPadAndroid - most other phones and tablets
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The Operating Systems Versions! Command line
DOSDisk Operating System
Unix - Uni-Information and Computer System
Linux Linus Torvald’s Unix
Graphics and Pointer Windows (10)Macintosh (OS X Yosemite)X-server (1.6)IOS - iPhone and iPad (8.1.3)Android - (Lollypop) most other phones and tablets
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BUT they all work the same way!
A recipe has a name
A recipe is a page in a book with method and ingredients
Initially recipes are in cookery books on a shelf in a library
The book with the recipe is taken from the shelf and put on the counter
The cook opens the book at the right page, reads the recipe from the book and follows it
The cook writes any changes to recipe into the book
The book with the modified recipe is put back on the shelf in the library
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BUT they all work the same way!
A computer file has a name
An app is a computer file in a folder with instructions and data
Initially files are in folders on a hard disk
The file with the app is taken from the folder on the hard disk a loaded into RAM
The computer opens the app at its start, reads the instructions from the app and follows them
The computer writes any changes to app or its data into the file
The file with the modified data is put back on hard disk
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Computer TypesPCs
Laptops
Desktops
Servers
Tablets
iPhone
iPad
Hudl etc. to numerous to mention
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PCs ( desktops, laptops, notebooks)
50 year-old concept
RAM is fast and expensive and ephemeral
No power - no memory
Storage is slow and cheap(er) and persistent
No power - still remembers
To run an App requires App and data to be loaded from Storage into RAM
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Why Does My Computer Take So Long To Start?
It’s like packing a bag for a trip
If you know what you need and you know where everything is then packing is easy
If you DON’T know what you’ll need and you DON’T know where stuff is its a nightmare
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What Will I Need?
Toilet kit
Shoes
Clothes
Nightware
Medications
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Startup ( or BOOTING)
Press the Power On button
The computer goes to special App called the BIOS
This reads the apps you need off of the hard drive and puts them into RAM
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What Will My Computer Need?The manufacturer decides
Apps to talk to the keyboard
Apps to talk to the display
Apps to talk to the mouse
Apps specific to your PC
Apps you usually use????
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Why Is My Computer So SLOW?UNTIDY HARD DRIVE
Hording
I’d better keep it. I might need it.
Fragmentation!
Hard Drive
RAM
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Too Much to Do!
Just have the apps you need to do what you wantAll computers come with irrelevant apps already installed
App companies PAY the computer manufacturer to install them at the factory
Its a form of advertising
Most are “computer required application programs” - CRAP
So remove them - or at least leave them on your hard drive storage.
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Apps on all Windows CDs
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Keyboard Display Mouse Microsoft Apps OperatingSystem
Apps on a typical Windows PC hard drive out of the box
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Keyboard Display Mouse Microsoft Apps
Word Excel McAfeesecurity
Must Have App 1!
Must Have App 2!
Must Have App 3!
Must Have App 4!
Must Have App ..!
Must Have App n!
OperatingSystem
ManufacturersApps
Apps you might also add
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Keyboard Display Mouse Microsoft Apps
Word Excel Photoshop
Firefox Chrome iPlayer Camera
Music Video
Other so-called Must Have! apps
OperatingSystem
ManufacturersApps
Your Apps
Initial Apps In Memory
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Keyboard Display Mouse
McAfeeSecurity
OperatingSystem
ManufacturersApps
OperatingSystem
ManufacturersApps
Your Apps
Apps In Memory after a while
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Keyboard Display Mouse
Word iPlayer Chrome
Photoshop
OperatingSystem
ManufacturersApps
OperatingSystem
ManufacturersApps
Your Apps
Apps on the Hard Drive you use
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Keyboard Display Microsoft Apps
Excel Photoshop
Firefox Chrome iPlayer Camera
Music Video
OperatingSystem
ManufacturersApps
Your Apps
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DefragmentationImagine someone has emptied a filing cabinet all over the floor
All the files are there…
…but spread all over the floor
Defragmentation is sorting them all out and putting them in order.
X
Apps on the Hard Drive
X
Keyboard Display ITVPlayer 1 Microsoft Apps
ITVPlayer 2 Excel Photoshop
Firefox Chrome iPlayer Camera
Music Video ITVPlayer 3
OperatingSystem
ManufacturersApps
Your Apps
Fragmented App
Defragment
Clean up your hard drive with a utility app.
X
Tablets… from Smartphones to iPads
What’s the big deal?
FLASH memory
Flash memory remembers after power is removed.
Introduced by Toshiba in 1984. As more was used the costs dropped dramatically until it was cheap enough to replace conventional RAM
Used in USB thumb drives, SD Cards, etc.
So INSTANT APPs - no need to load from storage device each time you want an App
The computer not only remembers the status of an App but ALL of the Apps you were using when you switched off.
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Tablets from Smartphones to iPads
What’s the big deal?
Touch Screen
On screen keyboard
Gestures
App Store
Controls what Apps you can download
No viruses or malware
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Apps in the Tablet
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Keyboard Display Microsoft Apps
Excel Photoshop
Firefox Chrome iPlayer Camera
Music Video
Your Data
OperatingSystem
ManufacturersApps
Your Apps
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Questions?About today
Still unanswered
Anything else
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