Microprocessor 8085 Ppt By Gaonkar — ((free))

The 8085 is housed in a 40-pin Dual In-line Package (DIP). One of its most notable architectural innovations is , which reduces the physical pin count. Address/Data Demultiplexing ( The lower 8 bits of the address bus ( ) and the 8-bit data bus ( ) are multiplexed onto the same pins ( During the first clock cycle ( T1cap T sub 1

pins are freed up to transfer data, effectively separating the address and data streams. Module 4: 8085 Instruction Set and Addressing Modes

A 16-bit register that holds the memory address of the next instruction to be fetched and executed.

Before exploring the PPT content, it's important to understand why the 8085 is the ideal starting point for learning about CPUs. Introduced by Intel in 1977, the 8085 is an 8-bit microprocessor that marked a significant leap in processor design. It has several features that make it the perfect choice for a foundational course in computer architecture:

Creating a presentation based on authoritative book, Microprocessor Architecture, Programming, and Applications with the 8085 , requires balancing hardware architecture with assembly language programming. microprocessor 8085 ppt by gaonkar

, has been the "gold standard" for engineering students. If you are looking for a presentation-ready summary or a study guide based on this classic text, this post breaks down the core concepts of the Intel 8085. What Makes the 8085 Special? The 8085 is an 8-bit microprocessor

Ramesh Gaonkar heavily emphasizes mastering the instruction set through classification. An instruction is a command given to the microprocessor to perform a specific operation. Classification by Data Length:

8-bit wide; can process, read, or write 8 bits of data simultaneously. Address Bus: 16-bit wide; can address up to KB of memory.

Utilizing 3-to-8 decoders (like the 74LS138) to selectively activate unique chip-select ( ) lines on target hardware peripherals. The 8085 is housed in a 40-pin Dual In-line Package (DIP)

An 8-bit register that is part of the Arithmetic Logic Unit (ALU). It holds one of the operands for arithmetic/logical operations and stores the final result.

Interrupts are signals sent by external devices to request immediate attention from the microprocessor. Gaonkar classifies the 8085 interrupts based on their masking capability and masking vectors.

Utilizing logic gates or decoders (such as the 74LS138) to ensure that only one specific memory chip or I/O device is active for a unique address range. Peripheral-Mapped I/O vs. Memory-Mapped I/O:

Creating or studying a presentation based on Gaonkar’s methodology requires a deep dive into the precise hardware structure, timing mechanisms, and instruction sets he outlines. This comprehensive guide details the core components needed to build or study a definitive 8085 microprocessor presentation following the Gaonkar framework. Slide 1: Introduction to the 8085 Microprocessor Module 4: 8085 Instruction Set and Addressing Modes

The Intel 8085 is a conventional, general-purpose microprocessor capable of addressing 64 KB of memory. The "5" in 8085 indicates that it uses a single +5V power supply, which was a massive improvement over the 8080’s requirement for multiple power voltages (+5V, -5V, and +12V). Key Specifications:

An internal 8-bit register used by the ALU to hold operands during execution (not accessible to the programmer). Slide 4: The 8085 Register Structure Slide Title: Programmer's Matrix and Register Organization

) of a machine cycle. It signals an external latch (like the 74LS373) to catch and freeze the lower address lines (A0–A7), separating them from the subsequent data signals. Slide 6: Control and Status Signals Control, Status, and Power Signals Core Concepts: Control Signals: RD¯modified RD with bar above (Read; active low) and WR¯modified WR with bar above

The data is explicitly specified within the instruction itself (e.g., MVI A, 05H ).

Functional Block Diagram (ALU, Accumulator, Register Array)

A well-constructed 8085 PPT based on Gaonkar’s framework follows a predictable yet powerful narrative arc, typically comprising 60–120 slides. It is a blueprint of a revolution, broken down into discrete modules: