1. 8-1 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Principles of Computer Architecture Miles Murdocca and Vincent Heuring Chapter 8: Input and Output

2. 8-2 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Simplified Illustration of a Bus

3. 8-3 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Programmed I/O Flowchart for a Disk Transfer

4. 8-4 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Interrupt Driven I/O Flowchart for a Disk Transfer

5. 8-5 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring DMA Transfer from Disk to Memory Bypasses the CPU

6. 8-6 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring DMA Flowchart for a Disk Transfer

7. 8-7 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Intel Memory and I/O Address Spaces

8. 8-8 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring A Magnetic Disk with Three Platters

9. 8-9 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Organization of a Disk Platter with a 1:2 Interleave Factor

10. 8-10 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Master Control Block

11. 8-11 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Magnetic Tape A portion of a magnetic tape (adapted from [Hamacher, 1990]).

12. 8-12 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Magnetic Drum

13. 8-13 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Spiral Format for Compact Disk

14. 8-14 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring ECMA-23 Keyboard Layout Keyboard layout for the ECMA-23 Standard (2nd ed.). Shift keys are frequently placed in the B row.

15. 8-15 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring The Dvorak Keyboard Layout

16. 8-16 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Bit Pad with Puck

17. 8-17 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Mouse and Trackball A three-button mouse (left) and a three-button trackball (right).

18. 8-18 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Lightpen A user selects an object with a lightpen.

19. 8-19 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Touchscreen A user selects an object on a touchscreen.

20. 8-20 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Joystick A joystick with a selection button and a rotatable rod:

21. 8-21 Chapter 8 - Input and Output Principles of Computer Architecture by M. Murdocca and V. Heuring © 1999 M. Murdocca and V. Heuring Laser Printer Schematic of a laser printer (adapted from [Tanenbaum, 1999]).