1. Robert Crawford, MBA West Middle School
Introduction to computers and Information Technology Chapter 3, Input / Output Basics Lesson 3-2, Basic Output Devices
Robert Crawford, MBA
West Middle School

2. UNIT O BJECTIVES Essential Question
Distinguish among four types of output.
Compare and contrast basic output devices.
Explain how visual display systems work.
Summarize printing technology.
Essential Question
What types of output devices are best suited to each type of output?

3. KEY TERMS All-in-One Printer Cathode ray tube (CRT) Impact printer
Liquid Crystal Display (LCD)
Nonimpact printer
Output Device

4. What Is Output?
Page 31

5. Review (pg. 28) This is a good place to start, what is input?
Input is any kind of information, or instructions, that are put into the computers memory.
Remember how I put that in the notes
On the left we wrote
Info & ins ⇒ comp

6. What is output? (pg. 31) Remembering what input is, what is output?
Output is processed data provided by the computer.
There are four major forms of output. What are they?
Text
Graphics
Video
Audio

7. What is output? (pg. 31) Text What is text?
Just as there are four major forms of input, there are four major forms of output. They are:
Text
What is text?

8. What is output? (pg. 31) Graphics What are graphics?
There are four major forms of output. They are:
Text
Graphics
What are graphics?

9. Is this text or graphics?

10. What is output? (pg. 31) Video What is video?
There are four major forms of output. They are:
Text
Graphics
Video
What is video?

11. What is output? (pg. 31) Audio What is audio?
There are four major forms of output. They are:
Text
Graphics
Video
Audio
What is audio?

12. Common File Extensions

13. Common File Extensions
There are four major forms of output. They are:
Text
Graphics
Video
Audio
How can you identify the type of file (how it will be output) just by looking at the file name?
You can identify the type of file (how it will be output) just by looking at the file name.
This is why PowerPoint will not show your Word files.
There are several common file extensions.
.exe .xls .xlsx .doc .docx .ppt .pdf .odt .mp4

14. Output Devices
Page 32

15. What is an output device? (pg. 32)
So far we have discussed
types of output
Common file extensions and how they relate to types of output
Now we will discuss output devices.
What is an output device?
An output device is that displays or plays back the result of the computing process in one of the four forms of output.

16. What is an output device? (pg. 32)
Now we will discuss output devices.
An output device is that displays or plays back the result of the computing process in one of the four forms of output.
We will look at two of the most common types of output devices.
What are the two most common types of output devices?
Monitors
Printers

17. Monitors (pg. 32) What is a monitor?
A monitor is a hardware device that receives and shows images on a screen.
What are the two most common types of monitors?
CRT
LCD

18. Cathode Ray Tube (pg. 32)
What does CRT stand for?

19. Cathode Ray Tube (pg. 32) What is an advantage of the CRT monitor?
At a similar price the CRT will provide better colour control.
What are some disadvantages of the CRT?
Heavy
Heat
High energy usage

20. Liquid Crystal Display (pg. 33)
What does LCD stand for?

21. Liquid Crystal Display (pg. 33)
LCD stands for Liquid Crystal Display.

22. Liquid Crystal Display (pg. 33)
What is an advantage of the LCD display?
Some advantages of the LCD display are:
Lighter
Uses less power
Thiner

23. Printers(page 33) What do printers do?
Printers produce output on paper.
Which are more common, impact printers or non impact printer?
What are two common types of non impact printers?

24. Printers(page 33) Printers produce output on paper.
Two common types of non impact printers are laser and ink-jet printers

25. Printers(page 33)
One other category of non-impact printers is the all-in-one printer.
Why is this device called an all-in-one printer?

26. Printers(page 33)
One other category of non-impact printers is the all-in-one printer.
The all-in-one printer combines several devices in a single device.

27. Printers(page 33) Why have impact printers fallen out of favor? Loud
Poor image quality

28. Printers(page 33)
Just as important, why do some businesses still use impact printers?
Some businesses still use impact printers because:
They are reliable
Multi-part Forms
Tractor feed

29. Printers(page 33)

30. UNIT O BJECTIVES Distinguish among four types of output.
What are the four types of output?
Compare and contrast basic output devices.
What are the two most common types of output devices?
How are they similar?
How do they differ?
Explain how visual display systems work.
What are some of the advantages of LCD displays
Summarize printing technology.
Identify an advantage and a disadvantage of each type of printer (Laser, ink-jet, impact)

31. KEY TERMS All-in-One Printer Cathode ray tube (CRT) Impact printer
Liquid Crystal Display (LCD)
Nonimpact printer
Output Device