Cosc Ch. 3 Review
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. What would you like to do?
What is an enhanced keyboard?
A keyboard that contains additional keys that control volume, media, internet, and many other things.
What is the Key Matrix?
A grid of circuits located under the keys that when pressed closes the circuit.
What is the Character map?
A lookup table that tells the processor what key is being pressed.
What does the cursor, or insertion point, tell you?
Indicates where text will appear. Can be a highlighted box, blinking line, or blinking underscore.
What uses IR(infared), or RF(radio frequency), or blue tooth to connect to a computer and is increasing in popularity?
What does control+H do?
Locates and replaces text
What does CTRL+O do?
Opens a new document.
What does CTRL+X do?
Cuts the selected text
What does F1 do?
Displays on-screen help
What other key is present on a netbook or notebook that is normally not on a standard keyboard? Why?
Fn or function key, because those keyboards are smaller and cannot fit everything on it that a regular keyboard has.
Name three modifier keys?
Shift, Alt, Ctrl
Name 3 of the 5 keyboards for mobile devices?
Mini keyboard, keypad, Virtual laser keyboard, On-screen Keyboard, and an intelligent on-screen keyboard.
What is a pointing device?
a device that allows you to control the movement of the on-screen pointer.
What are the 4 commonly used mouses?
Optical mouse, Travel Mouse, wheel mouse, Wireless mouse.
Name 4 of the 7 mouse alternatives?
Trackball, pointing stick, touch pad or track pad, click wheel, joystick, stylus, and touch screen.
What is a click wheel?
A pad where you use circular motions to navigate through song lists, or movies commonly used on iPod classic or iTouch.
What is speech or voice recognition?
Conversion of spoken words into computer text.
What do scanner convert documents into?
A bitmapped image.
What is a bitmapped image?
I representation of an image as a matrix of dots or pixels.
What does OCR stand for?
What does it go?
- Optical Character Recognition
- Automatically converts scanned text to a file instead of a bitmapped image.
What different types of scanners are there?
Flatbed, Handheld, and 3D scanners.
How does a bar code reader work?
It scan an items UPC and uses the facilities computer system to retrieve info about an item
What is used do grade a scantron?
An optical Mark reader
What does LCD stand for?
HOw does it work?
- Liquid Crystal Display
- A panel at the back generates light waves to make the images and colors
what is the resolution of VGA?
What is the resolution of SVGA?
800 x 600
What is the resolution of XGA?
1024 x 768
What is the resolution of SXGA?
1280 x 1024
What is the resolution of UXGA?
1600 x 1200
What does OLED stand for?
How Does it work?
- Organic Light Emitting Diode
- They emit their own light and produce better color, contrast, brightness, and viewing angles
What are the two most common types of printers?
Inkjet and Laser
Name three of the four other types of printer?
- Thermal-transfer pattern
- Photo printer
What does DLP stand for?
Digital Light Processing
What is the difference between memory and storage?
Memory is something that is accessed quickly and easily, Storage is something that is filed away and can be gotten out but it takes more time.
What would you like to do?
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