GED 101 E Week 1 Computers Devices PDF

DISCOVERING COMPUTERS 2018 Digital Technology, Data, and Devices Module 1 Introducing Today’s Technologies...

DISCOVERING COMPUTERS 2018 Digital Technology, Data, and Devices Module 1 Introducing Today’s Technologies Computers and Devices Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.  Computers Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-2  Computers A computer is an electronic device, operating under the control of instructions stored in its own memory Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-3  Data and Information Figure 1-12 A computer processes data into information. In this simplified example, the item ordered, item price, quantity ordered, and amount received all represent data (input). The computer processes the data to produce the cash register receipt (information, or output). Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-4  The Components of a Computer A computer contains many electric, electronic, and mechanical components known as hardware Allows you to enter data and instructions into a Input Device computer Output Hardware component that conveys information to one or Device more people Case that contains the electronic components of the System Unit computer that are used to process data Storage Holds data, instructions, and information for future use Device Enables a computer to send and receive data, Communicati instructions, and information to and from one or more ons Device computers or mobile devices Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-5 posted to a publicly accessible website, in whole or in part.  Data and Information (2 of 14) A keyboard contains keys you press to enter data and instructions into a computer or mobile device Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-6  Data and Information (3 of 14) Figure 1-13 Users have a variety of options for entering typed text. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-7  Data and Information (4 of 14) A pointing device is an input device that allows a user to control a small symbol on a screen, called the pointer Some mobile devices and computers enable you to speak data instructions using voice input and to capture live full-motion images using video input Figure 1-14 A mouse and a touchpad. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-8  Data and Information (5 of 14) Figure 1-15 You can speak instructions into a microphone or wireless headset and capture live video on a webcam for a video call. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-9  Data and Information (6 of 14) A scanner is a light-sensing input device that converts printed text and images into a form the computer can process Figure 1-16 A Scanner. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-10  Data and Information (7 of 14) An output device is any hardware component that conveys information from a computer or mobile device to one or more people A printer is an output device that produces text and graphics on a physical medium, such as paper or other material – A 3-D printer can print solid objects, such as clothing, prosthetics, eyewear, implants, toys, parts, prototypes, and more Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-11 posted to a publicly accessible website, in whole or in part.  Data and Information (8 of 14) Figure 1-17 A printer can produce a variety of printed output including photos and 3-D solid objects. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-12  Data and Information (9 of 14) A display is an output device that visually conveys text, graphics, and video information Figure 1-18 Displays vary depending on the computer or mobile device. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-13  Data and Information (10 of 14) Speakers allow you to hear audio such as music, voice, and other sounds Figure 1-19 In a crowded environment where speakers are not practical, users can wear headphones to hear music, voice, and other audio. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-14  Data and Information (11 of 14) A storage device records (writes) and/or retrieves (reads) items to and from storage media Memory consists of electronic components that store instructions waiting to be executed and the data needed by those instructions A computer keeps data, instructions, and information on storage media Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-15 posted to a publicly accessible website, in whole or in part. Data and Information (12 of 14) Hard Disk Solid-State Drive Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-16  Data and Information (13 of 14) USB Flash Drive Memory Card Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-17 Data and Information (14 of 14) Optical Disc Cloud Storage Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-18  Programs and Apps Software, also called a program, tells the computer what tasks to perform and how to perform them – System Software  Operating system  Tools Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-19 posted to a publicly accessible website, in whole or in part.  Programs and Apps Installing a program is the process of setting up the program to work with a computer or mobile device, printer, and/or other hardware Once installed, you can run a program so that you can interact with it You interact with a program through its user interface Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-20 posted to a publicly accessible website, in whole or in part.  Programs and Apps A software developer, sometimes called a developer or programmer, is someone who develops programs and apps or writes the instructions that direct the computer or mobile device to process data into information Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-21 posted to a publicly accessible website, in whole or in part.  Programs and Apps Figure 1-31 A software developer writes instructions using Visual Basic (a) to create Payroll Information window shown here (b). Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-22  Communications and Networks In the course of a day, it is likely you use, or use information generated by, one or more of these communications technologies – Chat rooms – Email – Fax – FTP – GPS Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-23 posted to a publicly accessible website, in whole or in part.  Communications and Networks – Instant messaging – Internet – Newsgroups – Videoconference – Voice mail – VoIP Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-24 posted to a publicly accessible website, in whole or in part.  Communications and Networks A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-25 posted to a publicly accessible website, in whole or in part.  Communications and Networks Figure 1-32 Modems, wireless access, and routers are examples of communications devices that enable communications between computers/ mobile devices and the Internet. Notice that some computers and devices communicate via wires, and others communicate wirelessly. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-26  Communications and Networks Examples of wireless communications technologies include: – Wi-Fi – Bluetooth – Cellular radio Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-27 posted to a publicly accessible website, in whole or in part.  Communications and Networks A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media Figure 1-33 A server manages the resources on a network, and clients access the resources on the server. This network enables three separate computers to share the same printer, one wirelessly. Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1-28  Communications and Networks Home Networks – Connect to the Internet – Share a single high-speed Internet connection – Access photos, music, videos, and other content – Share devices – Play multiplayer games – Connect game consoles to the Internet – Subscribe to and use VoIP – Interact with other devices in a smart home Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-29 posted to a publicly accessible website, in whole or in part.  Communications and Networks Business Networks – Facilitate communications – Share hardware – Share data, information, and software Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-30 posted to a publicly accessible website, in whole or in part.  Technology Uses Education Government Finance Retail Entertainment Health Care Science Travel Publishing Manufacturing Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-31 posted to a publicly accessible website, in whole or in part.  Digital Safety and Security Green computing involves reducing the electricity consumed and environmental waste generated when using a computer Strategies include: – Recycling – Using energy efficient hardware and energy saving features – Regulating manufacturing processes – Extending the life of computers – Immediately donating or properly disposing of replaced computers Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-32 posted to a publicly accessible website, in whole or in part.  Summary Basic computer concepts Various methods for input, output, memory, and storage The Internet Digital security and safety risks and precautions Uses of technology applications in society Copyright © 2018 Cengage Learning®. May not be scanned, copied or duplicated, or 1-33 posted to a publicly accessible website, in whole or in part.