Download - Computer Storage
![Page 1: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/1.jpg)
Introduction to Computers – Part 2 1
Computer Storage
Warning – Science Content!
![Page 2: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/2.jpg)
Introduction to Computers – Part 2 2
An Analogue Device
Fully off (0)
Fully on (1)
Dimmer SwitchPartly on
![Page 3: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/3.jpg)
Introduction to Computers – Part 2 3
A Digital Device
Fully off (0)
Fully on (1)
Light SwitchCan’t hold any intermediate value
![Page 4: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/4.jpg)
Introduction to Computers – Part 2 4
The Binary Digit (Bit)
Value = 0 Value = 1
![Page 5: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/5.jpg)
Introduction to Computers – Part 2 5
2 Bits = 4 Values
Switch 1 Switch 2 Value
OFF OFF 00 (0)
OFF ON 01 (1)
ON OFF 10 (2)
ON ON 11 (3)
![Page 6: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/6.jpg)
Introduction to Computers – Part 2 6
8 Bits = 1 Byte = 256 Values
![Page 7: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/7.jpg)
Introduction to Computers – Part 2 7
Bits and BytesBitByteKilobyte (KB)Megabyte (MB)Gigabyte (GB)Terabyte (TB)Petabyte (PB)Exabyte (EB)Zettabyte (ZB)1 Yottabyte (YB)
![Page 8: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/8.jpg)
Introduction to Computers – Part 2 8
Computer Parts – The System Unit
![Page 9: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/9.jpg)
Introduction to Computers – Part 2 9
Monitor/Screen
![Page 10: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/10.jpg)
Introduction to Computers – Part 2 10
Keyboard
![Page 11: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/11.jpg)
Introduction to Computers – Part 2 11
Mouse
Original mouse
![Page 12: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/12.jpg)
Introduction to Computers – Part 2 12
Printer
![Page 13: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/13.jpg)
Introduction to Computers – Part 2 13
Modem
![Page 14: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/14.jpg)
Introduction to Computers – Part 2 14
Other Peripherals
![Page 15: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/15.jpg)
Introduction to Computers – Part 2 15
Inside the Case
![Page 16: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/16.jpg)
Introduction to Computers – Part 2 16
Motherboard
![Page 17: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/17.jpg)
Introduction to Computers – Part 2 17
(Micro)Processor
![Page 18: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/18.jpg)
Introduction to Computers – Part 2 18
Memory (RAM)
![Page 19: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/19.jpg)
Introduction to Computers – Part 2 19
Great Moments in History - 2
"640KB [of memory] ought to be enough for anybody"
Bill Gates, CEO of Microsoft, 1981
![Page 20: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/20.jpg)
Introduction to Computers – Part 2 20
Hard Disk Storage (HDD)
![Page 21: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/21.jpg)
Introduction to Computers – Part 2 21
Floppy Disk Drive
![Page 22: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/22.jpg)
Introduction to Computers – Part 2 22
Optical Drive (CD/DVD)
![Page 23: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/23.jpg)
Introduction to Computers – Part 2 23
USB Storage Devices
![Page 24: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/24.jpg)
Introduction to Computers – Part 2 24
Processor speeds
• Computer speed is measured in billions of cycles per second or ‘GigaHertz’. (more is better).
• Modern computers can execute at about 3GHz
• That’s about 3,000,000,000 instructions every second!
![Page 25: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/25.jpg)
Introduction to Computers – Part 2 25
Storage v MemoryStorage (HDD): Electromagnetic
Slow to access
Stores permanently - Contents remain when power is turned off
Memory (RAM):Electronic (semiconductor)Very fast access
Stores temporarily - Contents disappear when power is turned off!
![Page 26: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/26.jpg)
Introduction to Computers – Part 2 26
The Operating System
![Page 27: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/27.jpg)
Introduction to Computers – Part 2 27
The User Interface
![Page 28: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/28.jpg)
Introduction to Computers – Part 2 28
Command Line User Interface (CLI)
xxcopysu "f:\Data" "G:\Data" /a /h /e /r /q /y /zy /ze /pb /yy /v /OF /OD3 /oa"F:\Data\Batch Files\XXCopy\backup.log"
![Page 29: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/29.jpg)
Introduction to Computers – Part 2 29
Graphical User Interface (GUI)WINDOWS
Keep programs in separate boxes on the screen
ICONS represent programs or data
as picturesMENUS
present lists of available options
A POINTER Is used to select any object
on the screen
![Page 30: Computer Storage](https://reader035.vdocuments.site/reader035/viewer/2022062719/568130a0550346895d9697fa/html5/thumbnails/30.jpg)
Introduction to Computers – Part 2 30
Microsoft Windows