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Slide 1: Computing Fundamentals Module Lesson 1 — Introducing Computers Computer Literacy BASICS
Slide 2: Objectives      Define a computer. Identify how computers are used in our daily lives. Compare and classify types of computers. List the parts of a computer system. Explain how computers are integrated into larger systems through networks. 2 Computer Literacy BASICS
Slide 3: Vocabulary       Channel Computer Computer system Data Data communications Hardware      Internet Local area network (LAN) Mainframe computers Microcomputer Microprocessors Computer Literacy BASICS 3
Slide 4: Vocabulary (cont.)       Minicomputers Network Notebook computer People Protocol Receiver     Sender Software Supercomputers Wide area networks (WANs) 4 Computer Literacy BASICS
Slide 5: What Makes a Computer a Computer A computer is an electronic device that     Receives data: Information, such as text, numbers, or graphic images, is entered into the computer. Processes data: The computer will change the data from what was entered into the result the user wants. Stores data: The information is stored in the computer’s memory. Produces a result: A final display of the information that was entered can be printed or displayed on a monitor. Computer Literacy BASICS 5
Slide 6: The Processing Cycle of a Computer 6 Computer Literacy BASICS
Slide 7: Computers Perform Three Operations  Arithmetic operations – Adding, subtracting, multiplying, and dividing Equal to, greater than or less than, etc.  Logical comparisons –  Storage and retrieval operations 7 Computer Literacy BASICS
Slide 8: Why Are Computers So Popular?      Computers perform functions very quickly. Computers produce accurate and reliable results. Computers store large amounts of data. Computers are versatile and cost-effective. Computers are becoming more powerful and more useful every day. Computer Literacy BASICS 8
Slide 9: How Computers Are Used Today Computers are used every day for  News: Newspapers and television news stations post breaking news, and weather can be accessed on demand on the Internet. Shopping: Millions of people use the Internet every day to purchase goods and services.  9 Computer Literacy BASICS
Slide 10: How Computers Are Used Today (cont.)   10 Homework: Students have instant access to research and information and use wordprocessing and other software applications for assignments. Managing businesses: Businesses use computers to maintain inventory records, print invoices, track financial information and personnel records, advertise online, and many other tasks. Computer Literacy BASICS
Slide 11: Types of Computers  Supercomputers: The largest and fastest computers that are used by government agencies and large corporations to process tremendous volumes of data. Mainframes: Large, very expensive machines that can support thousands of users; used by large corporations. Computer Literacy BASICS  11
Slide 12: Types of Computers   Minicomputers: Larger than a desktop and much more expensive, but can support many users Microcomputers: Commonly called personal computers or desktop computers. Personal computers also include – – Notebook computers: Smaller and more portable than a desktop; commonly called a laptop PDAs: Personal Digital Assistants are very small and fit in the palm of your hand. Computer Literacy BASICS 12
Slide 13: Types of Personal Computers Macintosh desktop PC desktop 13 Computer Literacy BASICS
Slide 14: Types of Personal Computers Notebook PDA 14 Computer Literacy BASICS
Slide 15: Other Computing Devices   Microprocessors are computer chips that perform special functions to process information. These computer chips help many kinds of equipment perform more efficiently and effectively: – – – – – Household appliances Calculators, cellular telephones, and digital cameras Game systems Automobiles Industrial equipment Computer Literacy BASICS 15
Slide 16: Computer Systems  A computer system is a combination of parts working together: – – – – Hardware: The physical devices such as keyboard, monitor, CPU, and so on Software: Operating systems and application programs Data: The facts entered into a computer to be processed People: The users who enter the data and use the resulting output Computer Literacy BASICS 16
Slide 17: Hardware Components of a Typical Microcomputer System 17 Computer Literacy BASICS
Slide 18: Data Communications   Data communications is the technology that enables computers to communicate. The four components of data communications are – – – Sender: The computer that is sending the message Receiver: The computer receiving the message Channel: The media that carries or transports the message. This could be telephone wire, coaxial cable, microwave signal, or fiber optic. Protocol: The rules that govern the orderly transfer of the data sent Computer Literacy BASICS 18
Slide 19: Data Communications Components 19 Computer Literacy BASICS
Slide 20: Computer Networks     20 Businesses utilize a type of data communications called a network. A network consists of multiple computers connected to each other to share data and resources. A computer network located in a small geographical area, such as one building or department, is called a local area network or LAN. A network made up of several local networks in a city, region, or across the world is called a wide area network or WAN. Computer Literacy BASICS
Slide 21: A Typical Network Layout 21 Computer Literacy BASICS
Slide 22: Intranets  An intranet is used exclusively within an organization and contains company information such as handbooks, forms, and newsletters. – MVHS is our intranet  The major advantages of using an intranet include reliability and security because the organization can control access to this kind of network. Computer Literacy BASICS 22
Slide 23: Extranets   Extranets are computer networks that allow outside organizations to access a business’s internal information systems. Access is controlled tightly and is usually reserved for suppliers or customers. 23 Computer Literacy BASICS
Slide 24: The Internet      The Internet was developed for government research projects to share information quickly and easily. Today it is the largest network in the world. It is used daily by millions of computer users. It has become a critical and valuable business tool used by businesses of all sizes. The most commonly used feature of the Internet is electronic mail, or e-mail. Computer Literacy BASICS 24
Slide 25: Summary    A computer is an electronic device that receives data, processes data, and stores data to produce a result. Early computers were large, expensive machines used by governments and major corporations. Computers can be found in almost every aspect of our lives. Computer Literacy BASICS 25
Slide 26: Summary (cont.)  Computers are classified by – – – Size Speed application Supercomputers mainframe computers Minicomputers microcomputers  There are different types of computers – – – – 26 Computer Literacy BASICS
Slide 27: Summary (cont.)   Microcomputers are classified by the type of operating system they use, most commonly Windows or DOS on PCs and Mac OS on Macintosh computers. Notebook computers are small, portable computers that allow people to work away from their desks. 27 Computer Literacy BASICS
Slide 28: Summary (cont.)  Other devices that incorporate computers or task-specific microprocessors include personal digital assistants, cellular phones, digital cameras, interactive books, game systems, home appliances, automobile engines, and industrial equipment. 28 Computer Literacy BASICS
Slide 29: Summary (cont.)  A computer system consists of the following components – – – – Hardware Software Data people Transmission of text, numeric, voice, or video data from one machine to another Computer Literacy BASICS  Data communications – 29
Slide 30: Summary (cont.)  Four components of data communications – – – – sender receiver channel protocol connects multiple computers within a building to share data and resources. MVHS is our intranet includes several local area networks within a city, region, country, continent, or the world. Computer Literacy BASICS  Local area network – –  Wide area network – 30
Slide 31: Summary (cont.)  The Internet – – Originally developed so information could be shared by government researchers around the world. E-mail is the most common experience most people have with the Interne 31 Computer Literacy BASICS