Introduction to Computers - Houston Public Library

Introduction to Computers - Houston Public Library

Computer Basics 1 Computer Basic 1 includes two lessons: Lesson 1: Introduction to Computers Lesson 2: Common Computer Terminology Lesson 1 Introduction to Computer Objectives After completing lesson 1, you will be able to: Describe the importance of computers in todays world.

Identify the main parts of a computer. Identify the steps for starting a computer. Identify the different groups of keys on a keyboard. Perform different tasks by using a mouse. The Role of Computers

In Business and Industry In Publication Field In Education Field In Government Organizations

In Medical Field In Science Field In Entertainment Field Parts of a Computer 1. Input Devices (Keyboard, Mouse, etc.) 2.

Output Devices (Monitor, Speakers, etc.) 3. Central Processing Unit (CPU) and memory 4. Motherboard (Circuit Board) 5. Expansion Cards (Video Card, Sound Card, or NIC) 6. Hard Drive Ports and Connections (USB,

Firewire, etc.) Parts of a Computer Input Devices Mouse Keyboard Microphone

Scanner Webcam Parts of a Computer Output Devices Monitor Printer

Speaker/Headphone Parts of a Computer Central Processing Unit (CPU) A device that interprets and runs the commands that you give to the computer. Also referred to as the processor. Two major brands are Intel and AMD.

Examples: Intel Core 2 Duo, AMD Turion X2 Parts of a Computer Memory Memory is where information is stored and retrieved by the CPU. There are two main types of memory: Random Access Memory (RAM): It is the main memory and allows you to temporarily store commands and data.

Read Only Memory (ROM): It is the memory that retains its contents even after the computer is turned off. Parts of a Computer Motherboard o Is the main circuit board inside the computer. o Has tiny electronic circuits and other components on it. o Connects input, output, and processing devices together (CPU, Memory, Hard Drive, DVD Drive) o Tells the CPU how to run. Parts of a Computer Expansion Cards

Video Card is connected to the computer monitor and is used to display information on the monitor. Network Interface Card (NIC) is connected to other computers so that information can be exchanged between them. Sound Card converts audio signals (microphone or audio tape) which can be stored as a computer audio file. Parts of a Computer Storage Devices

Hard Disk Flash Drive CD-ROM DVD-ROM Parts of a Computer Ports and Connections

Universal Serial Bus (USB) Port FireWire (similar to USB but faster) Network Port (Ethernet) Parallel Port and Serial Port

Display Adapter Power Using a Computer To turn on a computer, press the power button on the system unit. Log on to the operating system by your user name and password.

Computers allow you to create, modify, and save files. To shut down a computer, click Start, and then, at the bottom of the Start menu, click Shut Down. Using a Keyboard Using a Mouse A mouse is a small device that you can use to move, select, and open items displayed

on your monitor. Most mouse devices have at least two buttons, left and right. Mouses action: o Point o Double Click o Left Click o Right Click o Click-and-Drag or Drag-and-Drop Using a Mouse (cont.)

Different types of mouse devices available in the market: o Regular mouse o Trackball mouse o Optical mouse Questions Lesson 2 Common Computer Terminology Objectives

Identify the primary hardware components of a computer. Define an operating system and its role. Define the term program. Explain what is meant by data.

Define the term network, and identify the benefits of networking. Define the term Internet. Hardware Refers to all the physical components of a computer. Includes all input devices, processing devices, storage devices, and output

devices. Examples of hardware are: o keyboard o mouse o motherboard o monitor o hard disk o cables o printer Operating Systems Is the most important software on the computer

Controls and manages the hardware connected to your computer Provides an interface that helps you to interact with the computer Ensures that your computer is functioning properly Windows XP is an example of the operation system.

Can be either text-based or graphics-based. Graphics-based operating system help you install hardware or software with easy-to-use interface. Programs o The hardware and the operating system together are referred to as a platform. o Programs, also called applications, use this platform to perform tasks. o There are many types of programs: o Some programs allow you to perform tasks such as writing letters, doing calculations, or

sending e-mail messages. o Other programs allow you to create illustrations, play games, watch movies, or communicate with other computer users. Data Programs process data that you provide as input to your computer. o Data can be in the form of text, graphics, audio, or video depending on the type of program. o Program processes the data and displays the output on the screen. o

o You can save this output in a file. The file can be an audio file, a text file, a graphics file, or a video file. o Networks Is a group of computers and associated devices that are linked together to facilitate sharing information. Can also be used to share data and

devices such as printers. A typical network has the following three components: o o o Server Workstation Communication channel Networks LAN

Connects devices within a limited area (home or a small group of offices) Commonly includes computers and shared resources (printers and scanners) Networks WAN Is a network that connects devices in geographically separated areas. Is used to connect networks across

different countries. The Internet is an example of a WAN. Internet Internet is a worldwide collection of public networks that are linked to each other for information exchange. Internet offers a range of services to its users (file transfers between Internet users and electronic mail)

The World Wide Web (WWW), or the Web, is another service that the Internet provides. An intranet is similar to the Web but is accessible only to authorized users of the organization. Questions Practices Lesson 1: Practice typing by visiting www.powertyping.com Practice using the mouse at www.mouseprogram.com

Lesson 2: Suggestion: Bring a box of computer hardware (mother board, video card, hard drive, CD/DVD drive, etc.) Ask students to name them. Next Class Computer Basic 2 Includes two lessons: Lesson 3: Computer Performance and Features Lesson 4: Computer Operation Systems

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