Computer Science Chapter 4
True or False A keyboard is an example of a pointing device
False
True or False An inkjet printer normally produces a better image than a laser printer
False
Scanner
an input device that reads printed text and graphics and transfers them to the computer
Display device
an output device that contains a viewing screen
Secure Facility access
biometric reader
Graphics tablet
rectangular input device that is used with a stylus to transfer drawings, sketches or anything written
Can be used to convert flat printed documents, such as a drawing or photograph, into digital form
scanner
Text based data entry
keyboard
Laser Printer
uses toner powder to produce images
Input or Output 1. Biometric reader 2. Graphics tablet 3. Speaker 4. Photo printer 5. flat panel display 6. digital camera 7. data projector 8. microphone 9. OLED monitor 10. Gaming controller
1. Input 2. Input 3. Output 4. Output 5. Output 6. Output 7. Output 8. input 9. Output 10. input
Biometric
A device used to input bio metric data, such as a fingerprint
Pointing Device
An input device that moves an on-screen pointer to allow the user to select objects on the screen
To print inexpensive color printouts for a wide variety of documents.
Ink-jet printer
Would an OLED display or an LCD display use more batter? Why?
LCD's require more power, LCDs require either an external light source or a fluorescent or LED backlight. OLED's do not require backlighting, no backlighting means OLED displays are smaller in size, use less power, weigh less and cost less.
To print all output for an entire office.
Network laser printer
To print high-quality black-and-white business letters and reports at home.
Personal laser printer
To print receipts for jet-ski rentals at the beach.
Portable printer
3 advantages of RFID technology over barcode
RFID doesn't need line of sight. An RFID tag is read/write. RFID tags are durable and reusable. Data is encrypted. RFID tags are capable of storing more data. Read rate is greatly increased. RFID tags can be printed with a barcode.
Tracking goods
RFID tag
Flatbed scanner
Scans flat items one at a time
Pen based computing
Stylus
Media Tablet
Touch screen
True or False Consumer kiosks located in retail stores commonly use touch screens for input
True
True or False Most digital still cameras store photos on flash memory media
True
True or False UPC is a type of barcode
True
RFID tag
a device containing a tiny chip and a radio antenna that is attached to an object
Multifunction Device
a device that offers multiple functions (printing, scanning, and faxing) in a single unit.
Display screen
a display device built into a computer or other device
Monitor
a display device for a desktop
Barcode
a machine that reads a code that represents data
Flat panel display
a slim type of display device that uses electronically charged chemicals or gases instead of an electron gun to display images
Radio Frequency Identification
a technology used to store and transmit data located in RFID tags
Liquid crystal display
a type of flat panel display that uses charged liquid crystals to display images
Organic light emitting diode display
a type of flat panel display that uses emissive organic material to display brighter and sharper images than LCDs
Plasma display
a type of flat panel display that uses layers of gas to display images
Virtually all portable computers and mobile devices, and most desktop computers today, use ______ displays, which are smaller and thinner and lighter than the ________ monitors used with desktop computers
flat panel
With _______ software, pen based computers can convert handwritten text into editable typed text
handwritten recognition
The smallest colorable area in an electronic image is called
pixel
Barcode printer
prints barcodes
Data projector
projects all computer output to a wall or projection screen
RFID reader
reads RFID tags
Optical character recognition
recognize scanned text characters and convert them to electronic form as text not images
Inkjet printer
sprays droplets of ink to produce images on paper
Pixel
the smallest colorable area in an electronic image
