Transcript CS101 Lecture - SSU Department of Computer Science

CS101 Lecture 5
Computer Software
Software
• Software is ...
• Two main types of software are…
Applications
• Applications (also called Programs) =
Instructions for the computer on how to do
certain functions under the control of the
__________ __________
• Examples Of Applications:
Operating System
• Set of instructions that controls _________
_____________________________.
Operating System Current Usage
Percentage
• http://en.wikipedia.org/wiki/Usage_share_o
f_operating_systems#Desktop_and_laptop_
computers
Who cares who runs your device?
Everyone else has to go through
them to get to ___.
What does that mean?
The tale of _________
What is an open or closed
system?
• _____ = No one owns the rights to making a
computer with that operating system
installed on the computer.
• ______ = Someone dose own the rights to
making a computer with that operating
system on the computer.
Four most popular current desktop
operating systems
• 1 Windows
– Controls an ____ system
• 2 Macintosh OS X
– Controls a ____ system
• 3 Linux
– Is an ____ and ____ ___ operating system
Open source = Anyone can have source code
– Example is the Ubuntu operating system we will be using in lab
________ OS (Google) is built using Linux
What explains the Mac and
Windows Stereotypes?
Is it an ____ or ______
System?
Windows runs an open system
• Open System =
• Good
• Bad
Macintosh OSX runs a closed system
• Closed system
• Good
• Bad
Why is Chrome OS starting to
catch on?
• Open system:
– ______
– Google make money on your ____
Evolution of the operating system interface
New User Interfaces?