Stefan Thorvaldsson – stefan@ywies.com
Hardware
Software
Keyboard
Monitor
Processor
Speakers
Mouse
Fixed hard drives
ROM/RAM
Printer
Web Cam
Operating system
Word-package
Presentation-package
Spreadsheet-package
Web browser
Database
Web design-package
Photo editing-package
Can you touch it?
Stefan Thorvaldsson – stefan@ywies.com
Secondary
storage devices
Input
devices
Processor and
internal memory
devices
Output
devices
Stefan Thorvaldsson – stefan@ywies.com
Central processing unit
Does the mathematic, calculating,
controlling and all logical
operations. The computers brain!
Stefan Thorvaldsson – stefan@ywies.com
Internal memory
There are two types. They are
called RAM and ROM. The
difference is that you can write to
RAM and only read from ROM.
RAM is temporary and fast and
ROM is stored on a chip or CD.
BIOS
Stefan Thorvaldsson – stefan@ywies.com
Input devices
Are used to get (write) data to the
computer ready for processing by
the CPU.
Input devices can be used
manually or automatic.
Stefan Thorvaldsson – stefan@ywies.com
Output devices
If data has been transferred into
the computer, it’s now
information. To get it out from the
computer again you need output
devices.
Stefan Thorvaldsson – stefan@ywies.com
Backing storage
Secondary storage use removable
media. It is used for programs and
data that’s not needed for the
computer initially and instantly by
the computer.
Long term storage and back up
copies.
Stefan Thorvaldsson – stefan@ywies.com
Stefan Thorvaldsson – stefan@ywies.com