Module 3: Evaluating Hardware: For Home and Work

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

Discovering Computers: Digital Technology, Data, and Devices, 17e

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Icebreaker: Interview Simulation

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A Peripheral Device is an input/output unit of a system that feeds data into and/or receives data from the central processing unit of a digital device. A computer system has many peripheral devices that help it run smoothly and serve various purposes.

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Can you identify some computer peripheral devices that you have used?

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Module Objectives

By the end of this module, you should be able to:

• Explain considerations when purchasing technology devices
• Describe the characteristics and uses of input and output devices
• Evaluate hardware
• Prevent and troubleshoot hardware theft or failure
• Distinguish among internal, external, and cloud-based storage
• Describe network hardware
• Explain the uses of cases, motherboard components, system clock, processor cooling, the arithmetic logic unit, the machine cycle, and registers
• Discuss ways to prevent health-related injuries and disorders caused by technology use
• Identify responsible e-waste and technology disposal techniques

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

3

Considering Computer Operating Systems (1 of 6)

• Hardware refers to the device itself and its components, such as wires, cases, switches, and electronic circuits.
• Components of computer hardware contain various types of hardware:
• Memory
• Storage devices
• CPU
• Input and output devices
• Communication devices

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Considering Computer Operating Systems (2 of 6)

Figure 3-2 How a computer might use virtual memory.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Considering Computer Operating Systems (3 of 6)

• A processor core is a unit on the processor with the circuitry necessary to execute instructions.
• Processors with more cores perform better.
• A processor with multiple cores is a multi-core processor.
• Computer memory is responsible for holding data and programs as they are being processed by the CPU.
• An operating system and other apps require a certain amount of RAM to function properly.
• When more apps run simultaneously, more RAM will be required.
• The area of the hard drive temporarily used to store data that cannot fit in RAM is called a swap file, or paging file.
• Using virtual memory may decrease your computer’s performance.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Considering Computer Operating Systems (4 of 6)

RAM

• It is the temporary storage location.
• It is stored on one or more chips connected to the main circuit board of the computer (the motherboard).
• It is volatile memory.
• The motherboard is a circuit board inside a computer that contains the microprocessor, the computer memory, and other internal devices.

ROM

• It is the permanent storage location.
• It is stored on a chip that contains BIOS connected to the main circuit board of the computer (the motherboard).
• It is non-volatile memory.
• Computer manufacturers update the instructions on the ROM chip, which are referred to as firmware.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Considering Computer Operating Systems (6 of 6)

Table 3-2 Factors to consider in buying a computer.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Which Type of Computer Is Right For You? (1 of 2)

Table 3-3 Evaluating system requirements.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Which Type of Computer Is Right For You? (2 of 2)

• The form factor refers to the shape and size of the computer.
• Various types of computers exist, including desktop computers, all-in-one computers, laptops, tablets, and other mobile devices.
• A desktop computer typically consists of the system unit, monitor, keyboard, and mouse which remain in a stationary location under a desk or table.
• An all-in-one computer has a monitor and system unit housed together.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Selecting The Right Device (1 of 2)

A laptop is a compact communicating device with

• input devices, keyboard, touchpad, and webcam
• output devices, screens, and speakers
• one or more storage devices, such as a hard drive

Ultrathin laptops

• Light weight and more expensive
• Less powerful
• Thin device with fewer parts
• Longer battery life

Figure 3-7 Laptop form factors.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Selecting The Right Device (2 of 2)

• Two popular form factors of tablets are slate and convertible.
• A slate tablet resembles a letter-sized pad and does not contain a physical keyboard.
• A convertible tablet is a tablet that has a screen on its lid and a keyboard on its base.

Figure 3-8 Slate and convertible tablets.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Input and Output Devices (1 of 3)

• A scanner is an input device that converts an existing paper image into an electronic file that you can open and work with on your computer.
• 3-D scanners can scan three-dimensional objects.
• Scanner can be used to scan a printed document to edit it using an app on your computer.
• A printer creates hard copy output on paper, film, and other media.
• A printer can be linked to a computer wirelessly, over a network, or with a cable.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Input and Output Devices (2 of 3)

Table 3-4 Types of printers.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Input and Output Devices (3 of 3)

• Computers can also provide voice output. A voice synthesizer converts text to speech.
• Some apps and operating systems have a built-in voice synthesizer.
• It is convenient for some and helpful for those with visual impairments.

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• Projectors can display output from a computer on a large surface, such as a wall or screen.
• These are wired or wirelessly connected to one another.
• It is an exact replica of the computer monitor.

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Figure 3-20 Projector and screen.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

15

Discussion Activity 3-1

Discuss various system requirements for a desktop to be used in your home. The desktop will be used by family members of all ages.

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What is the most important requirement for the desktop?

What are additional features that would be nice to have?

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

16

Install and Evaluate Hardware (1 of 3)

Before you turn on your computer or device for the first time, make sure that:

• All necessary components are included and free from damage.
• Read the manual to ensure you are following the setup instructions.
• Carefully unpack all components from the box and in case of laptop, charge the battery completely before use.
• Connect all components and accessories.
• Turn on the computer or device and follow all the remaining steps on the screen.

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Figure 3-21 User manuals provide

safe setup instructions.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Install and Evaluate Hardware (2 of 3)

• Peripheral devices over the wireless network need installation directly to your device through a port.
• Some devices, called Plug-and-Play devices, will begin functioning properly as soon as they are connected to your computer.
• A device driver is a program that allows your computer or device to issue controls to a separate device, such as a printer, monitor, or video card.
• To connect a wireless device to your computer, follow the installation instructions that come with the device.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Install and Evaluate Hardware (3 of 3)

• The processor’s clock speed measures the speed at which it can execute instructions.
• A cycle is the smallest unit of time a process can measure.
• The efficiency of a CPU is measured by instructions per cycle.
• The bus width determines the speed at which data travels and is also referred to as the word size.
• A benchmark is a test run by a laboratory or other organization to determine processor speed and other performance factors.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Secure IT: Reducing Hardware Risks �(1 of 5)

Avoid Hardware Theft

• Known for their mobility, devices can be stolen
• Keep data accessible in case of theft or destruction of the device
• To prevent laptops from being stolen, use a cable lock.
• Keep mobile devices out of sight when traveling in a high-crime area.
• Minimize the use of headphones and be aware of your surroundings.

Figure 3-22 Laptop cable lock.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Secure IT: Reducing Hardware Risks�(2 of 5)

• Use a damp cloth to clean the screen gently.
• Use a can of compressed air to clean the keyboard of any dirt and debris.
• Extreme temperatures or humidity can damage electronics.
• An uninterruptible power supply is a device that maintains power to computer equipment in the event of an interruption in the primary electrical source.
• A surge suppressor is a device that prevents power fluctuations from damaging electronic components.

Figure 3-23 Uninterruptible power supply.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Secure IT: Reducing Hardware Risks�(3 of 5)

Protecting a computer from a cyber attack is important, but its damage by dropping it or by a lightning strike is also of prime importance.

Table 3-5 Electrical changes.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Secure IT: Reducing Hardware Risks�(4 of 5)

• Restoring an operating system means reverting all settings to their default or migrating back to the operating system’s previous version.
• To restore the operating system, review the help documentation and follow the specified steps.
• Data backups can protect against hardware malfunctions, user errors, software corruption, and natural disasters.
• They can also protect against cyber attacks.

Figure 3-24 Windows includes a feature to restore your operating system.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Secure IT: Reducing Hardware Risks�(5 of 5)

• The central connection devices for a home-based Wi-Fi network are called wireless routers.
• Wi-Fi networks are vulnerable to several risks, such as:
• Reading wireless transmissions
• Viewing or stealing computer data
• Injecting malware
• Downloading harmful content

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Figure 3-25 Wireless router.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Internal, External, and Cloud-Based�Storage Solutions (1 of 3)

• When using a computer, the most common storage medium is the internal hard drive and can either store data magnetically or use solid state storage.
• Internal hard drives are installed on the computer you are using.
• An external hard drive can add storage capacity to your computer.
• Magnetic hard disk drives (HDDs) typically have greater storage capacity.
• A solid-state drive (SSD) is faster and more durable than magnetic drives.

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Figure 3-26 Hard disk drive.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Internal, External, and Cloud-Based�Storage Solutions (2 of 3)

• Optical media use laser technology for storage and playback and include CDs, DVDs, and Blu-ray discs.
• Optical media were once widely used to distribute installation files for programs and apps, but saving files to optical media requires special software or capabilities within the operating system.
• Instead of optical discs, USB flash drives, external hard drives, and cloud storage are now more commonly used to transport files.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Internal, External, and Cloud-Based�Storage Solutions (3 of 3)

• Cloud storage involves storing electronic files on a remote server connected to the Internet, not on a local computer, and is called storing data on the cloud.
• It enables the storage of files remotely on servers that could be any part of the world.
• Storing files on and retrieving files from cloud storage requires only a computer or mobile device with an Internet connection.
• Cloud storage companies host and maintain the servers and provide access to your files.

Figure 3-28 Cloud storage.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Knowledge Check Activity 3-1

Which of the following statements about HDD and SSD is NOT correct?

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1. HDD has a slower speed for reading and writing data, whereas SSD is faster at reading and writing data.
2. HDD has higher latency, whereas SDD has lower latency.
3. HDD does not produce noise, whereas SSD can produce noise due to mechanical movements.
4. HDD has lower latency, whereas SDD has high latency

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Knowledge Check Activity 3-1: Answer

Which of the following statements about HDD and SSD is NOT correct?

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Answer: c

HDD does not produce noise, whereas SSD can produce noise due to mechanical movements.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Network Hardware (1 of 3)

• All networks have the same basic characteristics and hardware.
• Networks allow computers to share resources, such as hardware, software, data, and information.
• A network requires a combination of hardware and software to operate.
• Smaller networks usually require simple hardware and can rely on the operating system’s features while larger networks typically require more sophisticated hardware and software.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Network Hardware (2 of 3)

• Devices on a network, also called nodes, include computers, tablets, mobile phones, printers, game consoles, and smart home devices.
• Most networks also include additional components, such as hubs, switches, and routers.
• A hub is a device that provides a central point for cables in a network and transfers all data to all devices.
• A switch is similar to a hub in that it provides a central point for cables in a network.
• A router is a device that connects two or more networks and directs, or routes, the flow of information along the networks.
• A modem is a communications device that connects a communications channel, such as the Internet, to a sending or receiving device, such as a computer.
• For a computer to connect to a network, it should have a network interface card.

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Network Hardware (3 of 3)

• Most of today’s modems are digital, which means that they send and receive data to and from a digital line.
• Cable and DSL (digital subscriber line) are two common types of digital modems.
• The type of modem required for your network will depend on your Internet service provider.
• A cable modem sends and receives digital data over a cable TV connection.
• A DSL modem uses existing standard copper telephone wiring to send and receive digital data.

Figure 3-29 Modems can connect many devices to the Internet.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Inside the Case (1 of 5)�

• Processor chips for laptops, desktops, and servers can generate quite a bit of heat, which could cause the chip to malfunction or fail.
• Heat sinks, liquid cooling technologies, and cooling pads are used to help further dissipate processor heat.
• A heat sink is a small ceramic or metal component with fins on its surface that absorbs and disperses heat produced.
• Liquid cooling technology uses a continuous flow of fluid, such as water and glycol, in a process that transfers the heated fluid away.
• A cooling pad rests below a laptop and protects the computer from overheating.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Inside the Case (2 of 5)�

Figure 3-30 Typical components of a higher-end desktop and laptop.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Inside the Case (3 of 5)�

• Many electronic components, such as the processor and memory, attach to the motherboard; others are built into it.
• On desktop and laptop computers, the circuitry for the processor, memory, and other components resides on a computer chip.
• A computer chip is a small piece of semiconducting material, usually silicon, on which integrated circuits are etched.
• An integrated circuit contains many microscopic pathways capable of carrying electrical current.

Figure 3-31 A desktop and laptop motherboard.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Inside the Case (4 of 5)�

A processor repeats a set of four basic operations, which comprise a machine cycle.

• Fetching is the process of obtaining a program or an application instruction or data item from memory.
• Decoding refers to the process of translating the instructions into signals the computer can execute.
• Executing is the process of carrying out the commands.
• Storing, in this context, “writing” means writing the result to memory (not to a storage medium).

Figure 3-32 The steps in the machine cycle.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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Inside the Case (5 of 5)�

• A processor contains small, high-speed storage locations, called registers, that temporarily hold data and instructions.
• Registers are part of the processor not part of memory or a permanent storage device.
• Register functions include storing the location from where instruction was fetched, storing an instruction while the control unit decodes it, storing data while the ALU calculates it, and storing the results of a calculation.
• The hazard of technology is your physical health as well as your behavioral and social well-being.
• Many users of technological devices report aches and pains associated with repeated and long-term usage of the devices, known as repetitive strain injury (RSI).

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

37

How To: Protect Yourself When Using�Devices (5 of 5)

• RSI impacts your muscles, nerves, tendons, and ligaments. RSI most often affects the upper parts of the body, including elbows, forearms, hands, neck, shoulders, and wrists
• RSI has a variety of symptoms:
• Aching
• Cramp
• Numbness
• Pain
• Stiffness

• Tenderness
• Throbbing
• Tingling
• Weakness

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

38

How To: Protect Yourself When Using�Devices (1 of 4)

RSI most often is caused by three factors:

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Table 3-6 Causes and examples of RSI.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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How To: Protect Yourself When Using�Devices (2 of 4)

Ergonomics is an applied science that specifies the design and arrangement of items that you use so that you and the items interact efficiently and safely.

This shows the correct ergonomic posture and techniques for sitting while working on a computer.

Figure 3-33 Ergonomic sitting setup.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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How To: Protect Yourself When Using�Devices (3 of 4)

• One behavioral hazard is technology addiction, which occurs when a user is obsessed with using a technology device.
• Apart from technology addiction, other behavioral risks are:
• Sedentary lifestyle
• Psychological development
• Social interaction
• One negative impact that can result in serious emotional harm is cyber-bullying.
• Doxing is a form of cyber-bullying in which documents (dox) are shared digitally that give private or personal information about a person.
• Cyber-stalking involves the use of technology to stalk another person through email, text messages, phone calls, and other forms of communication.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

41

How To: Protect Yourself When Using�Devices (4 of 4)

Table 3-7 Harmful features of cyberbullying.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

42

Ethics and Issues: Dispose of Hardware�Responsibly (1 of 2)

• E-waste is electronic waste from discarded digital devices.
• It often contains toxic metals, like lead and mercury which contaminate the ground and water supply, causing harm to the environment.
• Three responsible methods for disposing of e-waste:
• Send it to a recycling facility
• Donate it to a charity or other nonprofit organization
• Bring it to a technology store or firm

Figure 3-35 Electronic recycling center.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

43

Ethics and Issues: Dispose of Hardware�Responsibly (2 of 2)

An initiative called Sustainable Electronics Management (SEM) promotes the reduction of e-waste.

Table 3-8 SEM action steps.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

44

Case Study Activity 3-1 (1 of 2)

Ronny works remotely as an area sales manager for Crompton Inc. He attends daily stand-up meetings with his team. The company requires all employees to turn their cameras on and appear on screen during stand-up calls. Ronny has an older version of a computer system that has no integrated camera and wants to add an input device that can serve this purpose.

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

45

Case Study Activity 3-1 (2 of 2)

After reading the case study on the previous slide, answer the following question:

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What input device or devices does Ronny need?

1. A scanner and optical character recognition software
2. A webcam and a webcam driver
3. A motion-motion sensing controller
4. A projector and driver

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

46

Case Study Activity 3-1: Answer

What input device or devices does Ronny need?

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Answer: b

A webcam and a webcam driver

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Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

47

Self-Assessment

1. What specific components or functions do you look for when selecting a device?
2. Which ergonomic safety practices do you use to help protect yourself when using devices?
3. Which concepts in relation to device input and output did you find difficult to understand?
4. Were there any topics that you still have questions about in order to gain a full understanding?

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

48

Summary

Click the link to review the objectives for this module.

Link to Objectives

Jennifer T. Campbell, Discovering Computers: Digital Technology, Data, and Devices, 17th Edition. © 2023 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.

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