Academic slide decks based on this specific textbook are widely hosted on educational platforms. You can find comprehensive sets on:
Carry (CY), Parity (P), Auxiliary Carry (AC), Zero (Z), and Sign (S). Slideshare Slide 5: The 8085 Bus System Address Bus (16-bit):
The 16-bit memory address of the data is directly written in the instruction (e.g., LDA 2500H ).
Gaonkar famously classified instructions into five groups (Data Transfer, Arithmetic, Logical, Branching, and Machine Control). A PPT breaks each group into clickable examples. MOV, MVI, LDA, STA—each instruction is shown with its opcode, operand, and a miniature animation of register contents changing. Addressing modes (Immediate, Register, Direct, Indirect, Implied) become intuitive through side-by-side comparisons. microprocessor 8085 ppt by gaonkar
lines are freed up to act exclusively as a data bus for reading or writing. 4. The 8085 Instruction Set and Addressing Modes
: A 16-bit register used to manage stack memory during subroutine calls. 2. The Arithmetic Logic Unit (ALU)
This comprehensive technical overview is structured to align with the core concepts required for an educational presentation or seminar on the 8085 microprocessor. 1. Introduction to the Intel 8085 Microprocessor Academic slide decks based on this specific textbook
A 16-bit register pointing to a memory area reserved for temporary storage (the Stack) using PUSH and POP operations. Slide 4: The Flags Register
Non-maskable, highest priority vectored interrupt. Used for critical emergencies like power failures.
Performs 8-bit arithmetic (ADD, SUB) and logical operations (AND, OR, XOR). subtraction) and logical (AND
Key concepts explained typically include:
To understand the PPT, one must first appreciate the book. Gaonkar’s The 8085 succeeded where others did not because it struck a delicate balance between theory and practice. It did not merely list the instruction set or pin diagram; it wove them into a narrative of problem-solving. The book introduced the "kit" (the SDK-85 or similar trainer) as a tangible sandbox, where abstract concepts like opcode fetch, memory mapping, and interrupts translated into blinking LEDs and scrolling seven-segment displays. This hands-on philosophy became the gold standard for introductory microprocessors.
. It is used to signal external latches (like the 74LS373) to separate the address from the data bus. Higher-Order Address Bus (
Data is directly provided in the instruction (e.g., MVI A, 05H ). Register: Data is moved between registers (e.g., MOV A, B ).
| Internal Block | Function | |:---|:---| | | Performs all the arithmetic (addition, subtraction) and logical (AND, OR, XOR) operations on data. | | Register Array | A set of general-purpose registers (B, C, D, E, H, L) used as temporary storage for data during program execution. | | Accumulator (A) | The primary register where one operand is placed for ALU operations and where the result is stored. | | Flag Register | An 8-bit register with five 1-bit flags (Sign, Zero, Auxiliary Carry, Parity, Carry) that indicate the status of the last ALU operation, used for making decisions in a program. | | Program Counter (PC) | A 16-bit register that always holds the address of the next instruction to be executed. | | Stack Pointer (SP) | A 16-bit register that points to the top of a stack in memory, used for temporarily storing data or return addresses. | | Timing and Control Unit | Acts as the brain's pacemaker, generating the necessary control signals to synchronize all operations and fetch-execute cycles. | | Instruction Register and Decoder | Holds the current instruction being executed and decodes it to determine the operation to be performed. |