1. Number Representations and Basic Processor Architecture Prof. Yusuf Leblebici Microelectronic Systems Laboratory (LSM) [email_address]

2. Number Representations

3. Number Representations

4. Number Representations

5. Number Representations Two’s complement

6. Number Representations One’s complement

7. Number Representations

8. Number Representations

9. Building Blocks of Processor Systems CPU

13. 8085 Microprocessor Architecture Now we will examine these components more closely by using the Intel 8085 microprocessor architecture as an example:

14. The 8085 Bus Structure The 8-bit 8085 CPU (or MPU – Micro Processing Unit) communicates with the other units using a 16-bit address bus, an 8-bit data bus and a control bus.

18. The 8085: CPU Internal Structure Simplified block diagram

19. The 8085: Registers

22. Example: Memory Read Operation

24. Example: Instruction Fetch Operation

25. Example: Instruction Fetch Operation

26. 8085 Functional Block Diagram