Microprocessor 8085 Ppt By Gaonkar Jun 2026
Strengths
Icons representing different functional hardware expansion modules. Key Content:
The 8085 has five status flags that reflect the result of an ALU operation: Sign (S): Set if the result is negative. Zero (Z): Set if the result is zero. Auxiliary Carry (AC): Used for BCD arithmetic. Parity (P): Set if the result has an even number of 1s. Carry (CY): Set if an operation results in a carry-out. Pin Configuration and Signals microprocessor 8085 ppt by gaonkar
– Visualizing for an Opcode Fetch.
: Addition, subtraction, incrementing (e.g., ADD , SUB , INR ). Auxiliary Carry (AC): Used for BCD arithmetic
On Slide 10, animate the ALEcap A cap L cap E
Should I expand on any particular chip like the or 8279 Keyboard Controller ? Pin Configuration and Signals – Visualizing for an
A dual-sided 40-pin schematic diagram color-coded by signal functionality. Key Content: Address/Data Bus (
LXI SP, 2700H (Load the 16-bit immediate address 2700H into the Stack Pointer) 2. Arithmetic Group
| Week(s) | Topic | Key Concepts Covered | | :--- | :--- | :--- | | 1 | Introduction to Microprocessors | Definition, evolution from discrete components to microchips, basic block diagram of a microcomputer (CPU, Memory, I/O), and differences between a microprocessor, microcomputer, and microcontroller. | | 2 | 8085 Microprocessor Architecture | Internal architecture of the 8085, including the Arithmetic Logic Unit (ALU), register array (Accumulator, general-purpose registers), flag register, program counter, and stack pointer. | | 3 | Addressing Modes & Instruction Set | The five addressing modes of the 8085 (Immediate, Register, Direct, Register Indirect, Implied) and an introduction to the 74 instructions in its set. | | 4 | Interrupts of 8085 | The five hardware interrupts (TRAP, RST 7.5, RST 6.5, RST 5.5, INTR) and eight software interrupts (RST 0 - RST 7), including their priority and masking. | | 5-6 | Assembly Language Programming | Writing programs for data transfer, arithmetic/logical operations, using loops, counters, and time delays, as well as implementing stacks and subroutines. | | 7-9 | Programming Exercises & Lab Work | Practical application through coding exercises, focusing on flowcharts, program debugging, and result analysis to solidify programming concepts. | | 10-13 | Interfacing I/O Devices & Peripherals | Connecting the 8085 to external devices, including memory interfacing, and using programmable peripheral interface devices like the 8255 PPI, 8254 Timer, and 8279 Keyboard/Display controller. | | 14-15 | Advanced Topics & Review | A review of all concepts and an introduction to advanced microprocessors and microcontrollers, bridging the knowledge to modern systems. |