1. Chapter 3: Personal Computers in the Learning Environment Annette Arnold ETEC 562 September 14, 2005

2. Chapter Review Major components of the computing cycle Major components of the computing cycle Difference between software and hardware Difference between software and hardware Difference between memory and storage – both necessary Difference between memory and storage – both necessary What is the CPU? What is the CPU? Difference between input and output devices Difference between input and output devices How viruses are transmitted How viruses are transmitted Questions/Answers Questions/Answers

3. Computing Cycle Central Processing Unit StorageOutputMemoryInput

4. Software/Hardware Operating system Operating system Word Processing Word Processing Spreadsheets Spreadsheets Database Database Presentation Software Presentation Software Mouse Mouse Keyboard Keyboard Monitor Monitor Printer Printer CPU CPU Storage Storage

5. Memory/Storage ROM ROM RAM RAM Hard Disks Hard Disks Floppy Disks Floppy Disks Removable hard disks Removable hard disks CDs CDs DVDs DVDs

6. What is the CPU? Central Processing Unit Central Processing Unit “All computer components are ultimately interconnected through and coordinated by the CPU” pg 87 “All computer components are ultimately interconnected through and coordinated by the CPU” pg 87 Faster = better Faster = better Load into RAM Load into RAM

7. Input/Output Devices Keyboard Keyboard Pointing device Pointing device Mouse Mouse Trackball Trackball Joystick Joystick Touchpad Touchpad Monitor Monitor soft copy Printer Printer Hard copy

8. Viruses Attach to files on floppy disks Attach to files on floppy disks Copied to next computer Copied to next computer Antivirus program Antivirus program

9. Questions/Answers What are the four major components of the computing cycle and why it is important that teachers know this information? What are the four major components of the computing cycle and why it is important that teachers know this information? What is a computer virus, how is it transmitted, and what can you do to protect your classroom? What is a computer virus, how is it transmitted, and what can you do to protect your classroom? What is the difference between hardware and software, and give an example of each? What is the difference between hardware and software, and give an example of each?