The Information Processing Cycle Flashcards
Keyboard shortcuts
F1 - opens up a help screen for the program you are working in
Esc- let’s you get out of options or cancel choices
What do we mean by plug and play
A series of technologies where the operating system automatically detects and configures a device that has been plugged into the computer so that the device can be used immediately
Advantages of wireless devices
Less clutter as there are no cables
You have a wider range of movement
Disadvantage or limitations of wireless devices
They require batteries
They are slightly more expensive than wired devices
Can easily be removed so easily stolen
There can sometimes be inference with the wireless signal, causing the device to stop working temporarily
How is a monitor measured
The size is measured diagonally in inches from one corner to the other
Resolution
Refers to the number of pixels used to form the image
It is measured horizontally and vertically in pixels
Storage medium
Actual physical material or objects on which we store the data and programs
Storage devices
The computer hardware that read from and write to storage media
Storage capacities
Kilobyte (KB) 1024 bytes - normal word document
Megabyte (MB) 1024 KB - programs, videos, music
Gigabyte (GB) 1024 MB - browse web, use social networks and check email for up to around 40 minutes per day. Ideal for lighter users
Terabyte (TB) 1024 GB - external hard drives
Health concerns
Repetitive Strain Injury (RSI) - name given to injuries resulting from fast, repetitive work
Back pain
Headache
Carpal tunnel syndrome
Prevent RSI
Built-in wrist rests
Curved keyboards
Health tips for using computers
Use ergonomically designed equipment
Sit correctly
Ensure that lighting and ventilation are adequate
Occasionally turn your eyes away from the monitor
Take regular breaks
Ergonomics
The study and design of the workplace for the comfort and safety of people in work environments
Ways to practice green computing
Try to conserve power- switch devices off when not being used
Do not waste paper
Try to upgrade or donate old hardware
Buy energy efficient notebook computers instead of desktop computers
Check if you can refill and reuse ink and toner cartridges
What should you consider when buying a storage device
- Storage Capacity: How much stuff you can store.
- Read and Write Speeds: How fast you can access or save stuff.
- Reliability: How dependable your system is over time.
- Function1: What you actually want to use your computer for.