Transcript of Hardware Input and Output Devices. Objectives Discover the need for Input and Output Devices...
Hardware
Input and Output Devices
Objectives
Discover the need for Input and Output Devices
Describe suitable uses of each device
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
Radio Frequency IDentification
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
Input devices for automation and large
volumes• Optical Mark Reader
• Optical Character Reader
• Magnetic Ink Reader
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
Input or Output?
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
What Is This?!?
an early printer
Impact Printers
Daisywheel
Works like a typewriter - bangs a metal imprint against an ink-soaked ribbon
Slow, but simple
Impact Printers
Dot Matrix
Dots instead of letters - can now manage crude drawings
Reliable, not easily affected by dust or debris
QuickTime™ and aH.264 decompressor
are needed to see this picture.
Small nozzles spray liquid ink - high quality images but ink can smudge
Cheap to buy but expensive to replace ink
Inkjet Printers
Uses toner instead of ink – fast printing and does not smudge
Expensive to buy but cheap to replace toner
Laser Printers
Input or Output?
A. Input
B. Output
C. Input & Output
Give a suitable use
One or more moving arms draws on the paper
Good for drawing patterns or shapes
Plotter
Scenario
Paulo needs a printer in his pizza restaurant to print customers’ orders. The printouts will be used by the chefs so they know what to prepare.
Andrea needs a printer for her new business making cakes. She wants to be able to print a couple of small brochures with pictures of the best ones - the pictures need to be high quality but she won’t be printing hundreds of copies.
Scenario
Colin has been asked to buy a printer for ‘Oxygym’. They send a monthly newsletter out to customers as well as leaflets and flyers that are posted up in the reception area.
Cheryl is an architect and needs to buy a printer to print out her technical drawings. These printouts will be pretty big, highly detailed and need to be very accurate (scale).
HardwareInput and Output:
• describe suitable input devices for a wide range of computer controlled situations
• discuss input and output devices for users with specific needs.