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.