Technology in Action Chapter 2: Looking at Computers PDF

Technology in Action Eighteenth Edition Global Edition Chapter 2 Looking at Computers: Understanding the Parts © 2023 Pearson Education Ltd. All rights reserved Learning Objectives (1 o...

Technology in Action Eighteenth Edition Global Edition Chapter 2 Looking at Computers: Understanding the Parts © 2023 Pearson Education Ltd. All rights reserved Learning Objectives (1 of 3) 2.1 Describe the four main functions of a computer system and how they interact with data and information. 2.2 Define bits and bytes, and describe how they are measured, used, and processed. 2.3 List common types of computers and discuss their main features. 2.4 Identify the main types of keyboards and touch screens. 2.5 Describe the main types of mice and pointing devices. © 2023 Pearson Education Ltd. All rights reserved Learning Objectives (2 of 3) 2.6 Explain how images, sounds, and sensor data are input into computing devices. 2.7 Describe options for outputting images and audio from computing devices. 2.8 Describe various types of printers and explain when you would use them. 2.9 Describe the functions of the motherboard and RAM. 2.10 Explain the main functions of the CPU. © 2023 Pearson Education Ltd. All rights reserved Learning Objectives (3 of 3) 2.11 Describe the various means of storing data and information with computing devices. 2.12 Describe common types of ports used today. 2.13 Describe how to manage power consumption on computing devices. 2.14 Define ergonomics and discuss the ideal physical setup for using computing devices. © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer Computers are Data Processing Devices (Objective 2.1) Computer performs four major functions 1. Input: Gathers data, allows entering data 2. Process: Manipulates, calculates, or organizes data 3. Output: Displays data and information 4. Storage: Saves data and information © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (1 of 2) Binary: The Language of Computers (Objective 2.2) Bit – Binary digit – 0 or 1 Byte – Unique combinations of 8 bits of 0s and 1s Kilobytes, megabytes, gigabytes, terabytes, and petabytes © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (2 of 2) Binary: The Language of Computers (Objective 2.2) © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (1 of 5) Types of Computers (Objective 2.3) Cell phones © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (2 of 5) Types of Computers (Objective 2.3) Tablets Laptops and their variants – Ultrabook – Chromebook – 2-on-1 © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (3 of 5) Types of Computers (Objective 2.3) © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (4 of 5) Types of Computers (Objective 2.3) Stationary computers – All-in-one computer © 2023 Pearson Education Ltd. All rights reserved Understanding Your Computer (5 of 5) Types of Computers (Objective 2.3) Other types of computers – Mainframe computer – Supercomputer – Embedded computer © 2023 Pearson Education Ltd. All rights reserved Input Devices Physical Keyboards and Touch Screens (Objective 2.4) Used to enter data and instructions Examples – Keyboard – Touch screen – Stylus – Virtual keyboard © 2023 Pearson Education Ltd. All rights reserved Input Devices Mice and Other Pointing Devices (Objective 2.5) Mouse Touch pad (trackpad) Game controllers © 2023 Pearson Education Ltd. All rights reserved Input Devices (1 of 2) Image, Sound, and Sensor Input (Objective 2.6) Popular for images – Digital cameras – Camcorders – Mobile device cameras – Flatbed scanners – Webcams Popular for sound – Microphone with voice recognition software © 2023 Pearson Education Ltd. All rights reserved Input Devices (2 of 2) Image, Sound, and Sensor Input (Objective 2.6) Magnetometer Thermometer Proximity sensor Pedometer Light sensor Fingerprint sensor Accelerometer Heart rate monitor Gyroscope Li DAR Barometer © 2023 Pearson Education Ltd. All rights reserved Output Devices (1 of 4) Image and Audio Output (Objective 2.7) Send data out of the computer in the form of: – Text – Pictures – Sounds – Video Examples – Monitors – Printers – Speakers and headphones/earbuds © 2023 Pearson Education Ltd. All rights reserved Output Devices (2 of 4) Image and Audio Output (Objective 2.7) Types of display screens – Liquid crystal display (LCD) – Light-emitting diode (LED) – Organic light-emitting diode (OLED) How they work – Pixels – Aspect ratio – Resolution © 2023 Pearson Education Ltd. All rights reserved Output Devices (3 of 4) Image and Audio Output (Objective 2.7) Large group displays – Projectors – Interactive whiteboards © 2023 Pearson Education Ltd. All rights reserved Output Devices (4 of 4) Image and Audio Output (Objective 2.7) Speaker – Output device for sound – Surround-sound speakers – Wireless speaker systems Headphones or earbuds – Hearing might be damaged by excessive volume when using earbuds © 2023 Pearson Education Ltd. All rights reserved Output Devices (1 of 2) Printers (Objective 2.8) Inkjet – Affordable – High-quality color – Quick and quiet Laser – Faster printing speed – Higher-quality printouts – More expensive © 2023 Pearson Education Ltd. All rights reserved Output Devices (2 of 2) Printers (Objective 2.8) All-in-one printer – Printer, scanner, copier, and fax Large format printer – Prints oversize images 3D printer © 2023 Pearson Education Ltd. All rights reserved Processing and Memory on the Motherboard The Motherboard and Memory (Objective 2.9) Motherboard – CPU – ROM, RAM, and cache – Slots for expansion cards – Sound/video cards – Network interface card © 2023 Pearson Education Ltd. All rights reserved Processing and Memory on the Motherboard (1 of 2) Processing (Objective 2.10) Central processing unit (CPU) or processor – “Brains” of the computer – Controls all functions of the computer’s components – Processes all commands and instructions – Gigahertz (billions of tasks per second) © 2023 Pearson Education Ltd. All rights reserved Processing and Memory on the Motherboard (2 of 2) Processing (Objective 2.10) CPU performance measures – Processor speed measured in hertz (Hz) ▪ Gigahertz (GHz) – Number of cores ▪ Single ▪ Dual ▪ Quad ▪ Ten © 2023 Pearson Education Ltd. All rights reserved Storing Data and Information (1 of 3) Storage Options on Computing Devices (Objective 2.11) Local storage devices – Hard disk drive ▪ Primary storage device ▪ Nonvolatile storage ▪ Internal drive ▪ External hard drive – Solid-state drive (SSD) © 2023 Pearson Education Ltd. All rights reserved Storing Data and Information (2 of 3) Storage Options on Computing Devices (Objective 2.11) Portable storage options – Portable external drives – Flash drive – Flash memory card © 2023 Pearson Education Ltd. All rights reserved Storing Data and Information (3 of 3) Storage Options on Computing Devices (Objective 2.11) Cloud storage – Files stored on the Internet – Some amount is free – Can purchase additional storage © 2023 Pearson Education Ltd. All rights reserved Connecting Peripherals to the Computer Computer Ports (Objective 2.12) Thunderbolt – Transfer speeds up to 40 Gbps Universal serial bus (USB) port – Transfer speeds of 40 Gbps Connectivity port – Ethernet port – Up to 10,000 Mbps HDMI port © 2023 Pearson Education Ltd. All rights reserved Power Management and Ergonomics Power Controls and Power Management (Objective 2.13) Battery drain Power supply Sleep mode Warm/cold boot Hibernate © 2023 Pearson Education Ltd. All rights reserved Power Management and Ergonomics (1 of 2) Setting It All Up: Ergonomics (Objective 2.14) Ergonomics Guidelines – Monitor position – Adjustable chair – Proper typing position – Breaks – Adequate lighting © 2023 Pearson Education Ltd. All rights reserved Power Management and Ergonomics (2 of 2) Setting It All Up: Ergonomics (Objective 2.14) Assistive (adaptive) technologies – Voice recognition or special keyboards for visually impaired – Special trackballs for users with motor control issues © 2023 Pearson Education Ltd. All rights reserved Copyright This work is protected by United Kingdom copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials. © 2023 Pearson Education Ltd. 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