CHAPTER 1 - INTRODUCTION TO COMPUTER CONCEPTS.ppt

CHAPTER 1: AN OVERVIEW OF COMPUTER CONCEPTS  Learning Objectives Explain why computer literacy is vital to success in today’s world Define the term computer, and describe the relationship between data and information Describe the components of computer Discuss the advantages...

CHAPTER 1: AN OVERVIEW OF COMPUTER CONCEPTS  Learning Objectives Explain why computer literacy is vital to success in today’s world Define the term computer, and describe the relationship between data and information Describe the components of computer Discuss the advantages and disadvantages of computers Describe the categories of computer and differentiate among types, sizes and functions Describe the role of each element in an information system A World of Computers What is computer literacy (digital literacy)?  Computers are everywhere  Current knowledge and understanding of computers and their uses  What is a Computer?  Electronic device operating under the control of instructions stored in its own memory, that can accept data according to specified rules, produce results, and store the results for future use. Accepts data Collection of unprocessed items Collects Produces Produces data Processing information and stores (input) (output) results Processes data into information Conveys meaning and is useful to people What Is a Computer? What is information processing  cycle? Input  Process  Output  Storage  Communication What Is a Computer? What is information processing cycle? (Continue) The Components of Computer A computer contains many electrical, electronic, and mechanical components known as hardware Input Device Allows you to enter data and instructions into a computer Hardware component that conveys information to one or more Output Device people Case that contains the electronic components of the computer System Unit that are used to process data Storage Device Holds data, instructions, and information for future use Enables a computer to send and receive data, instructions, and Communications information to and from one or more computers or mobile Device devices Advantages and Disadvantages of Using Computers What are the advantages of using computers? The ability to perform the information processing cycle with amazing Speed Reliability (low failure rate) Accuracy and Consistency Ability to store huge amount of data and information (Storage) Ability to communicate with other computers and devices (Communication) Advantages and Disadvantages of Using Computers What are the disadvantages of using computers? Violation Privacy Public Safety Impact on Labor Force Health Risk Impact on Environment Categories of Computer What are the categories of computers? Personal Computers (desktop) Mobile Computers and Mobile Devices Game Consoles Servers Mainframes Supercomputers Embedded Computers Personal Computers What are the two most popular styles of personal computers?  PC and compatibles  Apple Macintosh use the Windows usually uses the operating system Macintosh operating system (Mac OS X) Personal Computers What is a desktop computer?  Designed so all of the components fit entirely on or under a desk or table Mobile Computers and Mobile Devices What is a Notebook Computer?  Portable, small enough to fit on your lap  Also called a laptop computer  Usually more expensive than a desktop computer with equal capabilities Mobile Computers and Mobile Devices What is a Netbook?  A type of notebook computer  Smaller, lighter  Often not as powerful as traditional notebook computer  Still suitable for word processing, running a Web browser and connecting wirelessly to the Internet. Mobile Computers and Mobile Devices What is a Tablet PC?  Resembles a letter-sized slate  Allows you to write on the screen using digital pen  Especially useful for taking notes Mobile Computers and Mobile Devices What are mobile devices? Small Smallenough enoughto to carry carryin inaapocket pocket Internet-enabled Internet-enabled telephone telephoneis isaa “smart “smartphone” phone” Mobile Computers VS Mobile Devices Game Consoles What are game consoles? Mobile computing device designed for single- player or multiplayer video games Servers, Mainframe, Supercomputer What are the types of server? A server controls access to network resources and provides centralized storage Mainframe very powerful, expensive computer that supports thousands of connected users Supercomputer the fastest, most powerful, most expensive computer. Used for applications requiring complex mathematical calculations and data analysis Embedded Computers What is an embedded computer?  A special-purpose computer that functions as a component in a larger product Embedded Computers What is an embedded computer? (Continue) Elements of an Information System To be valuable, information must be accurate, organized, timely, accessible, useful and cost-effective to produce. Generating information from a computer requires the following FIVE (5) elements:  Hardware  Software  Data  People  Procedures Together, these elements form an information system. Elements of an Information System  Summary Explain why computer literacy is vital to success in today’s world Define the term computer, and describe the relationship between data and information Describe the components of computer Discuss the advantages and disadvantages of computers Describe the categories of computer and differentiate among types, sizes and functions Describe the role of each element in an information system CHAPTER 1 - COMPLETE NEXT CHAPTER: SOFTWARE APPLICATIONS