Podcast
Questions and Answers
Which of the following is NOT a category of computer peripherals?
Which of the following is NOT a category of computer peripherals?
A keyboard is classified as an output device.
A keyboard is classified as an output device.
False
What is the primary function of the CPU in a computer?
What is the primary function of the CPU in a computer?
Processing data
The _______ is used to display results on the screen.
The _______ is used to display results on the screen.
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Match the peripheral devices with their functions:
Match the peripheral devices with their functions:
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What action does right-clicking typically perform?
What action does right-clicking typically perform?
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A _______ is a device that converts data so that it can travel over the Internet.
A _______ is a device that converts data so that it can travel over the Internet.
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Storage devices are used to enter data and commands into the computer.
Storage devices are used to enter data and commands into the computer.
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Which of the following is NOT considered a computer input device?
Which of the following is NOT considered a computer input device?
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A joystick is commonly used for drawing pictures on a computer.
A joystick is commonly used for drawing pictures on a computer.
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What action is performed by pressing and releasing the left mouse button twice?
What action is performed by pressing and releasing the left mouse button twice?
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To remove the character to the left of the current position on the screen, the ______ key is used.
To remove the character to the left of the current position on the screen, the ______ key is used.
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Match the input device with its primary use:
Match the input device with its primary use:
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Which key allows you to start a new paragraph or select options from a menu?
Which key allows you to start a new paragraph or select options from a menu?
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A cordless mouse is connected to the computer through a cable.
A cordless mouse is connected to the computer through a cable.
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What type of input device is used to draw pictures or select menu options directly on the screen?
What type of input device is used to draw pictures or select menu options directly on the screen?
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What is the primary purpose of the CPU in a computer system?
What is the primary purpose of the CPU in a computer system?
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A tablet PC can only be used with a mouse to navigate.
A tablet PC can only be used with a mouse to navigate.
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Name one key difference between a desktop PC and a laptop.
Name one key difference between a desktop PC and a laptop.
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A __________ can process and store large amounts of data and supports multiple users simultaneously.
A __________ can process and store large amounts of data and supports multiple users simultaneously.
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Match the type of computer with its description:
Match the type of computer with its description:
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Which of the following is NOT considered an input device?
Which of the following is NOT considered an input device?
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DVDs are expected to replace CDs as storage devices.
DVDs are expected to replace CDs as storage devices.
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What does the touchpad on a laptop enable the user to do?
What does the touchpad on a laptop enable the user to do?
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Study Notes
Word Processing Features
- Word processors allow document creation, storage, display, modification, and printing electronically.
- Changes can be made without retyping entire documents.
- Mistakes can be corrected easily.
- Paragraphs, sentences, or words can be inserted or deleted.
- Features such as cut and paste, find and replace, word wrap, printing, font specifications, graphics, headers/footers/page numbering, layout, and merging text files are common.
- Spell checkers and thesauruses are helpful tools.
- Desktop publishing systems offer more layout control and colour support compared to word processors.
Computer Ergonomics
- Continuous computer use can lead to health problems.
- Repetitive strain injury (RSI) can affect the neck, arms, wrists, hands, and fingers due to constant typing at high speed.
- Bad posture and uncomfortable chairs may cause back pain and stress.
- Eye strain, headaches, and eye fatigue can result from staring at screens for long periods or from glare.
- Electromagnetic radiation from monitors can be harmful.
- Ergonomic design, such as adjustable chairs, desk heights, and proper posture reduces health risks.
- Breaks are important to reduce strain and eye fatigue.
Electronic Waste
- Disposing of obsolete electronics (e.g., computers, phones, etc.) irresponsibly can cause substantial environmental harm and health risks.
- Improper disposal affects the environment and leads to health repercussions for workers and children.
- Recycling of electronics is important.
- Manufacturers should finance proper recycling programs.
Risks of Using Mobile Devices and In-Car Computers
- Prolonged use of mobile phones can cause health concerns, especially radiation concern.
- Navigation systems used in cars can lead to distraction and accidents.
- Avoiding mobile phone use while driving reduces the risk of accidents.
- Internet addiction is another emerging issue.
Computer Processors
- The CPU (Central Processing Unit) is the brain of a computer that carries out instructions in a circuit or chip.
- The speed is measured in gigahertz (GHz).
- Typical parts include the control unit, arithmetic logic unit, and registers.
- The motherboard contains the CPU, memory, and expansion slots.
- Expansion cards add features (like video or modem cards).
- RAM (Random Access Memory) is temporary memory needed while a program runs and data is temporarily stored.
- ROM (Read-Only Memory) is permanent storage holding instructions.
- Expanding RAM allows for more programs to run simultaneously.
Input Devices
- Input devices allow users to enter data into computers.
- Examples include keyboards, mice, touchscreens, joysticks, digital cameras, scanners, microphones, graphics tablets, light pens, and touchpads.
- Keyboards have alphanumeric keys, numeric keys, cursor keys, and function keys.
- Mice use a pointer to move around and select items on the screen with buttons.
- Voice input converts speech into text.
Types of Computer Systems
- Mainframes are the most powerful computers handling large amounts of data and multiple simultaneous users; used in large organizations.
- Desktop PCs are general-purpose personal computers used in homes and offices.
- Laptops/notebooks are portable personal computers with similar power to desktop PCs and a smaller display.
- Tablet PCs are hand-held devices that allow users to write and draw with a stylus.
- Wearable computers are small and portable devices allowing for hands-free or voice commands.
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Description
Test your knowledge on word processing features and computer ergonomics. This quiz will cover key functionalities of word processors, the importance of ergonomic practices, and how to avoid health risks associated with prolonged computer use. Prepare to enhance your understanding in these essential areas.
