The document discusses the basic components and operation of computers. It describes how a central processing unit (CPU) works with memory and input/output devices using control signals and buses to execute instructions. The CPU fetches and executes instructions in cycles, and can be interrupted by external events using interrupt signals. Buses connect the different components and allow for communication between the CPU, memory, and input/output devices.

5. Computer Components: Top Level View

10. Example of Program Execution

11. Instruction Cycle State Diagram

13. Program Flow Control

15. Transfer of Control via Interrupts

16. Instruction Cycle with Interrupts

17. Program Timing Short I/O Wait

18. Program Timing Long I/O Wait

19. Instruction Cycle (with Interrupts) - State Diagram

21. Multiple Interrupts - Sequential

22. Multiple Interrupts – Nested

23. Time Sequence of Multiple Interrupts

25. Computer Modules

35. Bus Interconnection Scheme

37. Physical Realization of Bus Architecture

39. Traditional (with cache)

40. High Performance Bus

45. Synchronous Timing Diagram

46. Asynchronous Timing – Read Diagram

47. Asynchronous Timing – Write Diagram

52. PCI Read Timing Diagram

53. PCI Bus Arbiter

54. PCI Bus Arbitration