1. DEFINITION: consist of a series of related instruction for a common purpose that tell computer what to do and how to do it.
2. OPERATING SYSTEM
2.1. A SET OF PROGRAMS THAT CONTAIN INSTRUCTION WORK TOGETHER TO COORDINATE ALL ACTIVITIES AMONG COMPUTER HARDWARE RESOURCES
2.2. TYPE OF OS
2.2.1. STAND ALONE OS
2.2.1.1. COMPLETE OS THAT WORK IN DESKTOP COMPUTER
2.2.2. SERVER OS
2.2.2.1. DESIGN TO SUPPORT A NETWORK
2.2.3. EMBEDDED OS
2.2.3.1. RESIDE ON A ROM CHIP ON A MOBILE DEVICES OR CONSUMER ELECTRONIC DEVICE
2.3. FUNCTION OF OS
2.3.1. START AND SHUTDOWN A COMPUTER
2.3.1.1. PROCESS OF STARTING AND RESTARTING COMPUTER IS CALLED BOOTING
2.3.1.1.1. COLD BOOT
2.3.1.1.2. WARM BOOT
2.3.2. PROVIDE A USER INTERFACE
2.3.2.1. CONTROL HOW WE ENTER DATA and INSTRUCTION,HOW INFORMATION IS DISPLAYED ON THE SCREEN
2.3.2.1.1. GRAPHICAL USER
2.3.2.1.2. COMMAND LINE INTERFACE
2.3.3. MANAGE PROGRAM
2.3.3.1. MANAGE MULTIPLE PROGRAMS AND PROCESSES
2.3.4. MANAGE MEMORY
2.3.4.1. OPTIMIZES THE USE OF RAM
2.3.5. COORDINATE TASK
2.3.5.1. DETERMINE THE ORDER IN WHICH TASK ARE PROCESS
2.3.6. CONFIGURE DEVICE
2.3.6.1. A SMALL DEVICE THAT TELL OS HOW TO COMMUNICATE WITH A SPECIFIC DEVICE
2.3.6.1.1. DRIVER
2.3.6.1.2. PLUG AND PLAY
2.3.7. ESTABLISH AN INTERNET CONNECTION
2.3.7.1. TO ESTABLISH INTERNET CONNECTION
2.3.8. MONITOR PERFOMANCE
2.3.8.1. PROGRAM THAT ASSESSES AND REPORTS INFORMATION ABOUT VARIOUS COMPUTER RESOURCES AND DEVICE
2.3.9. PROVIDE FILE MANAGEMENT AND OTHERS UTILITY
2.3.9.1. MANAGING FILE
2.3.9.2. SEARCHING FILES
2.3.9.3. VIEWING IMAGES
2.3.9.4. SECURING A COMPUTER
2.3.9.5. UNINSTALLING PROGRAMS
2.3.9.6. CLEANING DISKS
2.3.9.7. DEFRAGMENTER DISKS
2.3.9.8. SETTING UP SCREENSAVER
2.3.10. AUTOMATICALLY UPDATE
2.3.10.1. AUTOMATIC UPDATE AUTOMATICALLY PROVIDES UPDATE TO THE PROGRAM
2.3.11. CONTROL A NETWORK
2.3.11.1. DESIGNED TO WORK WITH A SERVER ON A NETWORK
2.3.12. ADMINISTER SECURITY
2.3.12.1. HAVE AN ADMISTRATION ACCOUNT THAT ENABLES THEM TO ACCESS THEM ALL FILES AND PROGRAM
3. UTILITY PROGRAM
3.1. FILE MANAGER
3.1.1. PROVIDE ROUTINE FILE MANAGEMENT TASK
3.2. DISK CLEAN UP
3.2.1. SEARCH AND REMOVE UNNECESSASRY FILE
3.3. COMPRESSION TOOLS
3.3.1. SHRINK THE SIZE OF FILE
3.4. ANTI-VIRUS PROGRAM
3.4.1. PROTECT A COMPUTER AGAINST VIRUS
3.5. SPYWARE REMOVER
3.5.1. DETECTS AND DELETE SPYWARE
3.6. DISK DEFRAFMENTER
3.6.1. REORGANIZE THE FILEAND UNUSED SPACE ON COMPUTER HARD DISK SO THAT PROGRAM CAN RUN FASTER
3.7. BACKUP and RESTORE
3.7.1. BACKUP- ALLOWS USERS TO COPY FILES TO ANOTHER STORAGE IN CASE OF DAMAGE OR LOST
3.7.2. RESTORE-REVERSE THE PROCESS AND RETURN BACK BACKUP FILES TO THE ORIGINAL FORM
4. APPLICATION SOFTWARE
4.1. DEFINITION: APPLICATION SOFTWARE CONCIST OF PROGRAMS DESIGNED TO MAKE USERS MORE PRODUCTIVE
4.2. TYPE
4.2.1. WEB BROWSER
4.2.1.1. ALLOWS USER TO ACCESS AND INTERACT WITH SOFTWARE FROM ANY COMPUTER OR DEVICE THAT CONNECTED TO INTERNET
4.2.1.1.1. PROPRIETARY SOFTWARE - INTERNET EXPLORER & SAFARI
4.2.1.1.2. OPEN SOFTWARE - CHROME & MOZILLA FIREFOX
4.2.2. WORD PROCESSING
4.2.2.1. ALLOWS USER TO CREATE AND MANIPULATE DOCUMENTS
4.2.2.1.1. PROPRIETARY SOFTWARE - MICROSOFT OFFICE WORD & PAGES (APPLE)
4.2.2.1.2. OPEN SOFTWARE - OPENOFFICE.org WRITER
4.2.3. SPREADSHEET
4.2.3.1. ALLOWS USERS TO ORGANIZE DATA IN ROWS AND COLUMNS PLUS PERFORM CALCULATION
4.2.3.1.1. PROPRIETARY SOFTWARE - MICROSFT OFFICE EXCEL
4.2.3.1.2. OPEN SOFTWARE - K CELLS
4.2.4. DATABASE
4.2.4.1. ALLOWS USERS TO CREATE, ACCESS AND MANAGE A DATABASE
4.2.4.1.1. PROPRIETARY SOFTWARE -MICROSOFT OFFICE ACCESS
4.2.4.1.2. OPEN SOFTWARE - MARIADB
4.2.5. PRESENTATION
4.2.5.1. ALLOWS USERS TO CREATE VISUAL AIDS FOR PRESENTATION S TO COMMUNICATE IDEAS, INFORMATION TO OTHERS.
4.2.5.1.1. PROPRIETARY SOFTWARE - MICROSOFT OFFICE POWERPOINT
4.2.5.1.2. OPEN SOFTWARE - SHOWCASE