Operating system- Types of os/ uses of os .ppt

Operating System (OS)
 The software that manages the sharing of
the resources of a computer.
 Examples of Operating Systems
◦ Windows XP
◦ Vista
◦ Unix
◦ Mac OS

Desktop
 Desktop
◦ The main working space on your computers screen
 Icons
◦ are pictures of the menu item you are choosing –
an executable program or shortcut to a file.
 Examples of an icon include
 The blue bar located at the bottom of the
desktop is called the
 Task Bar

Navigating Windows
 The path to get to your Student drive (H: drive:)
◦ My Computer > (H:) drive
 What is the path to get to the shared drive:
◦ My Computer > Share on ‘Muellerpark’ (S:)

Navigating Windows
 The root of a drive is the beginning
 Files are created when a document is
saved
 Folders organizes and store files

Navigating Windows
Creating, deleting, and renaming a folder

Print Screen
 Taking a picture of what is on your screen
◦ Press the Print Screen button on your
keyboard
◦ Open Word
 Right click and paste

Computer Basics
Its All Geek to Me

INPUT DEVICES (Hardware)
 Keyboard
 Mouse
 Microphone
 Scanner
 Touch screens
 Bar code scanner
 Voice recognition
 Auxiliary Storage
Device

OUTPUT DEVICES (HARDWARE)
 Useful information that leaves the system
 Output Hardware includes:
• Monitor: soft copy
• Printers: hard copy
• Projector
• Voice and music - speakers
OUTPUT

ROM
READ ONLY MEMORY
RAM
RANDOM ACCESS MEMORY
 Small
 Instructions are installed
permanently at the factory
 Cannot be changed
 These instructions check
the computer’s resources
and looks for Operating
System
 Main Memory
 Temporary—it is erased
when turned off.
 It is where programs and
data is stored while being
processed
MEMORY PROCESSING HARDWARE

PROCESSING HARDWARE
 Central Processing Unit: CPU
 The Brains or Intelligence of the computer.
◦ Controls input and output
◦ interprets instructions
◦ executes instructions.
 Silicon chip: integrated circuit board
◦ Pentium: name give to a particular chip
 Hertz: the speed of the CPU
◦ Gigahertz: executes a billion instructions per second
◦ Megahertz: executes a million instructions per second

Processors
Come in Many Sizes
 Mainframe: large, powerful, serving many connected
terminals. Super Computers
 Minicomputer: mid-sized, serves more than one user
at a time
 Microcomputer: PC, individual workstation
 Laptop: portable, small
 Handheld: Palm Pilots

What is Data?
Facts used by a computer
Words
Numbers

What two numbers are used in Binary
Code?
 0 and 1
 They are each called a BIT
 8 BITS make a BYTE
 1 BYTE makes a letter or number
 KILOBYTE = 1,024 bytes
 MEGABYTE = 1,048,576 bytes
 GIGABYTE = 1,024 megabytes
 TERABYTE = 1,024 gigabytes

AUXILIARY STORAGE DEVICES
 Network Drive (H: drive)
 Hard Disk Drive (C:drive)
 Floppy Disk Drive with 3 ½” Floppy Disk
(A:drive)
 Jump Drive/Thumb Drive
 I-Pod
 CD Read/Write Drive
 DVD
 Zip Drive
AUXILIARY
STORAGE

SOFTWARE
 Programs that Make the Computer Work
 Operating System Software
 Vista
 Windows XP: GUI (Graphical User Interface)
 Unix
 Linux
 Application Software
 MicrosoftWord, Excel,Access, Front Page, Publisher
 WordPerfect
 Illustrator, Photoshop, Dreamweaver

What is the Boot Process?
 The process of starting up a computer from a
halted or powered-down condition.
◦ Commands in ROM memory are followed
 The process of loading the Operating System
software into Main Memory
◦ Windows 98
◦ Windows XP
◦ Unix

Operating system- Types of os/ uses of os .ppt

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