1. Robert Crawford, MBA West Middle School

2.  Distinguish among four types of input.  Compare and contrast basic input devices.  Discuss the health risks of using some input devices. Essential Question What are the four types of input and what devices are best suited to each type of input?

3.  Command  Digital Camera  Ergonomic  Pointer  Pointing Device  Repetitive Strain Injury (RSI)  Scanner

4. Pages 28 & 29

5.  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.  We are going to look at four kind of input: ◦ Data ◦ Software Instructions ◦ User Commands ◦ Responses

6.  What is data?  Data is the information that is entered into, or provided to, the computer.  Examples of data include: ◦ Words ◦ Numbers ◦ Images ◦ Sounds

7.  What must a computer do to perform a job?  To perform any job the computer must follow instructions from software programs. ◦ How do software programs typically get into your computer hard drive?  You can install them from a CD or download them. ◦ After installing a program, you must launch it.  launching the program moves the program to the RAM where it is accessible to the CPU.  This is part of the reason that more RAM helps the computer work better.

8.  What is a user command?  A user command is an instruction to the computer that tells a software program what action perform. ◦ Examples of commands that you use in Word or Excel include:  Open  Save  Close  Print To do these things you issue commands to the computer.

9.  When the computer asks you for information before it can carry out a command, what is it asking for? ◦ (one word, starts with ‘R’)  When the computer asks you for information before it can carry out a command, it is asking for a response.

10.  We have been discussing the basic types of input. ◦ What are the four basic types of input?  The four basic types of input are: ◦ Data ◦ Software Instructions ◦ User Commands ◦ Responses

11. Pages 29 & 30

12.  This is a good place to start, what is an input device?  An input device is any hardware used to input data. ◦ The two most common input devices are the keyboard and the mouse. ◦ As we mentioned, there are other devices that perform similar tasks to a mouse:  Track pad  Trackball  All of these input devices are, primarily, used to move the pointer/cursor, as such, they are called “pointing devices.”

13. There are also specialized input devices  X/Y motion ◦ Joystick  Tactile feedback  Sound ◦ Microphone  Video ◦ Digital Cameras ◦ Webcams ◦ Scanners  Communication ◦ Modem

14. Page 30

15.  A repetitive strain injury (RSI) is an "injury to the musculoskeletal and nervous systems that may be caused by repetitive tasks, forceful exertions, vibrations, mechanical compression, or sustained or awkward positions.“  Specific sources of discomfort have been popularly referred to by terms such as Blackberry thumb, iPod finger, gamer's thumb, among others.

16.  Ergonomics is concerned with the understanding of interactions among humans and other elements of a system, and methods to design in order to optimize human well-being and overall system performance. —International Ergonomics Association

17.  Ergonomics is about making machines, and systems, fit people rather than telling people to fit machines.

18.  Distinguish among four types of input. ◦ What are the four basic types of input?  Compare and contrast basic input devices.  Discuss the health risks of using some input devices.

19.  Distinguish among four types of input.  Compare and contrast basic input devices. ◦ Name two types of input devices The type of input they are used for ◦ What is a modem?  Discuss the health risks of using some input devices.

20.  Distinguish among four types of input.  Compare and contrast basic input devices.  Discuss the health risks of using some input devices. ◦ What kind of injury can occur when you make the same movement over and over again? ◦ What is the field of science devoted to avoiding these types of injuries?

21.  Command  Digital Camera  Ergonomic  Pointer  Pointing Device  Repetitive Strain Injury (RSI)  Scanner