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Questions and Answers
What is the primary function of input devices in a computer system?
What is the primary function of input devices in a computer system?
What typically characterizes a QWERTY keyboard layout?
What typically characterizes a QWERTY keyboard layout?
Which of the following is an example of an input device?
Which of the following is an example of an input device?
Which type of keyboard is specifically designed to reduce strain on the user's hands and wrists?
Which type of keyboard is specifically designed to reduce strain on the user's hands and wrists?
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What type of data can be input into a computer using voice?
What type of data can be input into a computer using voice?
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Which of the following does NOT typically serve as an input device?
Which of the following does NOT typically serve as an input device?
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What do keyboards convert to send to the system unit for processing?
What do keyboards convert to send to the system unit for processing?
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Which of the following examples represents an innovative type of input device?
Which of the following examples represents an innovative type of input device?
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Which device is used to convert sound into a digital signal for Voice Over IP (VoIP) communication?
Which device is used to convert sound into a digital signal for Voice Over IP (VoIP) communication?
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Which of the following best describes primary storage?
Which of the following best describes primary storage?
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Which characteristic is NOT associated with solid-state storage devices?
Which characteristic is NOT associated with solid-state storage devices?
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What is a common feature of optical storage devices?
What is a common feature of optical storage devices?
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Which of the following statements about cloud storage solutions is FALSE?
Which of the following statements about cloud storage solutions is FALSE?
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Which type of secondary storage typically has the longest lifespan?
Which type of secondary storage typically has the longest lifespan?
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What is an advantage of using solid-state drives (SSDs) over traditional hard disk drives (HDDs)?
What is an advantage of using solid-state drives (SSDs) over traditional hard disk drives (HDDs)?
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Which of the following devices would be considered an input device?
Which of the following devices would be considered an input device?
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Which device is specialized for receiving and sending voice communication?
Which device is specialized for receiving and sending voice communication?
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What is the most important characteristic of a monitor?
What is the most important characteristic of a monitor?
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Which type of printer uses technology similar to photocopying machines?
Which type of printer uses technology similar to photocopying machines?
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Which of the following is NOT considered a primary storage device?
Which of the following is NOT considered a primary storage device?
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What characteristic is crucial for optical storage devices?
What characteristic is crucial for optical storage devices?
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Which cloud storage solution offers real-time collaboration on documents?
Which cloud storage solution offers real-time collaboration on documents?
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Which statement about solid-state storage is true?
Which statement about solid-state storage is true?
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Which of the following statements correctly differentiates primary from secondary storage?
Which of the following statements correctly differentiates primary from secondary storage?
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Study Notes
Input and Output Devices
- Input devices receive data from the user and send it to the CPU to be processed.
- Output devices display the results to the user.
Input
- Refers to any data or instructions used by a computer.
- Examples include keyboard entries, scanned or photographed images, and voice commands.
Input Devices
- Translate words, sounds, images, and actions into a form the system unit can process.
- Common input devices include:
- Keyboards
- Mice
- Pointing devices
- Scanning devices
- Image capturing devices
- Audio-input devices
Keyboards
- Convert numbers, letters, and special characters into electrical signals.
- Most keyboards use the QWERTY layout.
- Keyboards come in different types:
- Traditional keyboards: full-sized, rigid, rectangular that include function, navigational, and numeric keys.
- Ergonomic keyboards: similar to traditional keyboards but designed for comfort and to reduce strain.
Types of Input Devices
- Audio input devices: convert sounds into a form that can be processed by the system unit.
- Scanning devices: read bar codes, magnetic ink characters, and flat documents.
- Image capturing devices: capture photographs and videos.
Output Devices
- Devices that display processed data to the user.
- Common examples include:
- Monitors
- Printers
- Speakers
- Projectors
- Plotters
Monitors
- Most important features include clarity, resolution, and viewable size (dot pitch).
- Types of monitors:
- Flat-panel monitors: LCD and LED screens that are thin and energy-efficient.
- CRT monitors: bulky and heavier than flat-panel monitors.
- E-book readers: specifically designed for reading electronic books.
- Data projectors: project images onto a screen for presentations.
- HDTVs: high-definition televisions that provide high-quality picture and sound.
Printers
- Devices that print documents onto paper.
- Types of printers:
- Ink-jet printers: use ink cartridges to spray ink onto paper.
- Laser printers: use a laser beam to transfer toner onto paper.
- Dot-matrix printers: use pins to strike an inked ribbon to create characters.
- Thermal printers: use heat to transfer images onto special heat-sensitive paper.
- Plotters: create large-scale drawings and maps.
- Photo printers: specialize in printing high-quality photographs.
- Portable printers: designed for portability and are often used for receipts and mobile printing.
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Description
Test your knowledge on input and output devices in computing. This quiz covers essential concepts, types of input devices like keyboards and mice, and how these devices interact with the CPU. Enhance your understanding of how data is entered and displayed by computers.
