1. 1 11 CHAPTER Information Technology, the Internet, and You computing ESSENTIALS

2. Computer competency Acquiring computer-related skills 2

3. Components of Information Systems 1.People (End users ) Goal is to improve the productivity of people) 2.Procedures ( rules or Guidelines to follow using software, hardware, data) 3.Software 4.Hardware 5.Data (text, numbers, images, sounds); Data :Raw unprocessed facts information :is processed (useful )data. 6.Connectivity (Allows computers to connect and share information computing ESSENTIALS

4. People People (End users their goal is to improve the productivity of people) Most important part of an information system 4 computing ESSENTIALS

5. Software (Programs) Series of instructions that process data Two kinds – System software ( Used by the computer) – Application software( Used by the user) 5 computing ESSENTIALS

6. System Software Enables application software to interact with computer hardware System Software include 3 parts 1-Operating system software (ex. Windows XP, MacOS) 2- Utilities :programs perform specific tasks related to managing computer resources (ex. Windows disk defragmenter) 3- Device Drivers :specialized programs allow input or output device to communicate with computer system. 6 computing ESSENTIALS

7. Application Software Used by the End-user Application Software has 2 parts : 1- Basic or General-purpose programs – Internet Explorer, Microsoft Word, PowerPoint 2- Special-purpose programs – Custom written for specialized tasks – Ex. Adobe photo shop 7 computing ESSENTIALS

8. Hardware Physical electronic devices Hardware functions – Input/Output data – Process data – Storage – Communication 8 computing ESSENTIALS

9. Types of Computers 1.Supercomputers, Most powerful type of computer with High data capacity,and used by large organization 2.Mainframe computers (Less powerful then supercomputers but still Capable of great processing speed and Large data storage capacity, 3.Minicomputers(midrange computers), Desk-sized machines 4.Microcomputers(Least powerful but most popular) 9 computing ESSENTIALS

10. Microcomputers Least powerful but most popular Sizes range from desktop to handheld Includes: 1.Desktop - fit on desk tops, but not portable 2.Laptop(notebook) - portable 3.Tablet PC type of notebook that accept handwriting. 4.PDAs- Personal digital assistants, also called palmtop computers, or handheld computers 10 computing ESSENTIALS

11. Microcomputer Hardware 11 Physical equipment consist of System unit I/O devices Secondary storage(floppy,hard drive, optical disks) computing ESSENTIALS

12. System Unit Container Contains most of the electronic components Most Significant components: 1.Microprocessor(Controls and manipulates data 2.Memory(random access memory (RAM)) Holds data and programs during processing Memory is temporary because it’s contents will be lost when power is interrupted 12 computing ESSENTIALS

13. Input/Output Devices Translation devices that interface the computer with humans Input devices(that data and programs are translated from human readable form into machine readable form.) – Keyboard, mouse, scanner, digital camera Output devices(data and programs are translated from machine readable form into human readable form.) – Monitor, printer, speakers 13 computing ESSENTIALS

14. Secondary Storage Devices Store data and programs even after power is shut off Most common types – Floppy disks – Hard disks – Optical disks (CD-ROMs, DVDs) – Magnetic tapes 14 computing ESSENTIALS

15. Data Files Electronic storage of raw or processed data and Used to describe facts about something Common types 1.Document, usually created by word processors 2.Worksheet, electronic spreadsheet analysis of data such as budgets, sales 3.Database, electronic database management programs, data is stored in a highly structured and organized manner 4.Presentation, electronic slides 15 computing ESSENTIALS

16. Connectivity Computer’s ability to communicate and share information with other computers 16 computing ESSENTIALS

17. Wireless Revolution Wireless Revolution: is the widespread and increasing use of mobile communication devices Most dramatic change in connectivity 17 computing ESSENTIALS

18. The Internet The Internet: Largest network in the world (Global connectivity) World Wide Web (WWW) --- multimedia sites that contain the information and resources online OR Internet service providing multimedia interface 18 computing ESSENTIALS

19. End of Chapter 1