A2 Flashcards
What is a Peripheral Device?
Not essential to the running of a computer system. Connects to the system to provide additional functions. Usually on the outside of the computer.
Name three input devices and their uses.
- Keyboard: for text input
- Mouse: for cursor control
- Scanner: for digitizing documents
Name three output devices and their uses.
- Monitor: displays visual output
- Printer: produces physical copies of documents
- Speakers: outputs audio
What are the four main storage devices?
- Hard Disk Drives (HDD)
- Solid State Drives (SSD)
- USB Flash Drives
- Optical Discs (CD/DVD)
What are the characteristics of Internal Storage Devices?
- Speed
- Robustness
- Power Consumption
- Storage Space
- Cost
Fill in the blank: SSDs use a system of interconnected flash memory chips that can be built onto the _______.
motherboard/main board
What is the primary difference in robustness between SSDs and HDDs?
An SSD is flash storage with no moving parts, while HDDs have spinning platters and read/write heads that can be damaged.
True or False: SSDs consume more power than HDDs.
False
What is a major advantage of removable storage devices?
- Portability
- No power requirement
- Fast data transfers
- Security of data
- Easy to use
- Increased durability
- Compatibility with many devices
- Cost efficiency
- Offline access
What do you understand by the term Accessibility?
The design of products, devices, services, or environments for people with disabilities.
What are assistive technologies?
Any hardware or software that may help individuals with disabilities.
What is adaptive technology?
Hardware or software designed specifically for individuals with disabilities and can be added to existing devices.
What is a Trackball?
An alternative to a mouse, consisting of a ball that can be rotated to move the cursor.
What is the function of a Braille Keyboard?
Enables visually impaired users to input text/instructions using Braille.
What does a Braille Printer do?
Enables text output using raised dots that can be read by touch.
How does Eye Tracking technology work?
Uses a camera to determine where the user is looking and monitors eye movements for cursor control.
What is a vertical mouse designed to do?
Avoid wrist strain by aligning the mouse to a more natural handshake position.
Fill in the blank: A Puff-sip Switch is used by people who have _______.
limited physical mobility
Name two examples of adaptive technologies.
- Braille embossers
- Screen magnifiers
What is the purpose of Manual Data Processing?
To ensure data processing is performed by human input, which can reduce errors but may also introduce them.
What is Automatic Data Processing?
Data processing that is performed by devices to reduce human error.
