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