9359625.ppt
- 1. COM111 Introduction to Computer Applications Essential Computer Concepts Part I
- 2. Intro to Computers Objectives Recognize the importance of computer literacy Define the term, computer Identify the components of a computer Discuss the advantages and disadvantages of using computers Recognize the purpose of a network Discuss the uses of the Internet and World Wide Web Distinguish between system software and application software Describe the categories of computers Identify the elements of an information system Describe the various types of computer users Discuss various computer applications in society
- 3. A World of Computers What is computer literacy? Knowledge and understanding of computers and their uses Computers are everywhere
- 4. How is a computer defined? What Is a Computer? Produces and stores results Electronic device operating under the control of instructions stored in its own memory Processes data into information Data that is organized, meaningful, and useful Accepts data Raw facts, figures, and symbols
- 5. What is Computer? Definition - A programmable machine. - The two principal characteristics of a computer are: - It responds to a specific set of instructions in a well-defined manner. - It can execute a prerecorded list of instructions (a program).
- 6. What Is a Computer? What is the information processing cycle? Input Process Output Storage Communication
- 7. The Components of a Computer What is an input device? Hardware used to enter data and instructions
- 8. The Components of a Computer What is an output device? Hardware that conveys information to one or more people
- 9. The Components of a Computer What is the system unit? Case that contains the electronic components of the computer that are used to process data
- 10. The Components of a Computer What are two main components on the motherboard? Processor Also called a Central Processing Unit (CPU) The electronic component that interprets and carries out the basic instructions that operate the computer Memory Consists of electronic components that store instructions waiting to be executed and data needed by those instructions
- 11. The Components of a Computer What is storage? Storage media Physical material on which data, instructions, and information are stored Storage device Records and retrieves items to and from storage media Holds data, instructions, and information for future use
- 12. The Components of a Computer What is a USB flash drive? Portable storage device Small and lightweight enough to be transported on a keychain or in a pocket The average USB flash drive can hold about 500 million characters
- 13. The Components of a Computer What is a hard disk? Provides greater storage capacity than a USB flash drive Most are housed inside the system unit
- 14. The Components of a Computer What is a compact disc? Flat, round, portable metal disc CD-ROM DVD-ROM
- 15. The Components of a Computer What is a communications device? Hardware component that enables a computer to send and receive data, instructions, and information Occurs over cables, telephone lines, cellular radio networks, satellites, and other transmission media
- 16. Storage Communications Advantages and Disadvantages of Using Computers What are the advantages of using computers? Speed Reliability Consistency
- 17. Impact on Labor Force Advantages and Disadvantages of Using Computers What are the disadvantages of using computers? Violation of Privacy Health Risks Public Safety Impact on Environment
- 18. Networks and the Internet What is a network? Collection of computers and devices connected together Used to share Resources Hardware devices Software programs Data Saves time and money Information
- 19. Networks and the Internet What is a server? A server controls access to resources on a network Clients, or workstations, request resources from the server
- 20. Networks and the Internet What is the Internet? Worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals