🔴 Interrupts in 8085 Microprocessor | Bangla Tutorial | Lecturelia 🔴

Welcome to Lecturelia!
In this video, we explain the concept of Interrupts in 8085 Microprocessor in simple Bangla. Interrupts are crucial for handling urgent tasks by temporarily pausing the current program and executing a new one — a key feature in modern computing and embedded systems.

📌 What You’ll Learn:

0:00 – Introduction
0:08 – What is an Interrupt?
1:05 – Concept of Interrupt with Diagram
🎯 Perfect For:
CSE, ICT, and Diploma students
Beginners in microprocessors and digital electronics
Academic exams, viva & interview preparation

🖥️ Don’t forget to like, comment, and subscribe to Lecturelia for more tech and academic content in Bangla!

📢 Subscribe for more:
👉 https://www.youtube.com/@Lecturelia

👇 Follow us for updates:
📘 Facebook: https://www.facebook.com/Lecturelia
📷 Instagram: https://www.instagram.com/nomaneeium
🔗 Website: Not available right now
👉 Our completed courses

► Artificial Intelligence - https://www.youtube.com/playlist?list=PLncy2sD7w4YrJTxgIEZ_GN6Ja9Wp8iLgj
► Operating System - https://www.youtube.com/playlist?list=PLncy2sD7w4Yr3ZbiP_ipAjgjDRn86N_tT
► Algorithms - https://www.youtube.com/playlist?list=PLncy2sD7w4Yp5CipRjpicHn-5RSCDKnFy
► Compiler Design - https://www.youtube.com/playlist?list=PLncy2sD7w4Yo_d-l9V7Uq1Xydt-rqikvT
► Computer Graphics - https://www.youtube.com/playlist?list=PLncy2sD7w4YpWn8jM9Sk6ISOsCZ7oLn9r
► Microprocessor 8085 - https://www.youtube.com/playlist?list=PLncy2sD7w4YrRdWllCJzNTB69yR9L69Fi
► Theory of Computing - https://www.youtube.com/playlist?list=PLncy2sD7w4YqBniaSEkOtzcZa3UNtWpMF
► Software Engineering - https://www.youtube.com/playlist?list=PLncy2sD7w4YqcWltmTBXgCiyLB9llT703
► Data Communication - https://www.youtube.com/playlist?list=PLncy2sD7w4YpbMkd6cF0kVH8SUM-VrpeQ
► Artificial Neural Network - https://www.youtube.com/playlist?list=PLncy2sD7w4YpZ3Ebo5XjZAOo6Vjfza1Kb
► Evolutionary Computation - https://www.youtube.com/playlist?list=PLncy2sD7w4YpzrVa9STVyChlpPTd-KaqV

Interrupts in 8085 Microprocessor

An interrupt is a signal that temporarily halts the normal execution of a program and diverts the microprocessor to perform a specific task. After completing the task, control returns to the main program. In the 8085 microprocessor, interrupts are categorized in several ways:

1. Hardware and Software Interrupts

Hardware Interrupts are received through physical pins of the microprocessor.
There are 5 hardware interrupts in 8085:

TRAP

RST 7.5

RST 6.5

RST 5.5

INTR

Software Interrupts are generated by specific instructions or mnemonics inserted in the program.
There are 8 software interrupts in 8085:

RST 0

RST 1

RST 2

RST 3

RST 4

RST 5

RST 6

RST 7

2. Vectored and Non-Vectored Interrupts

Vectored Interrupts have fixed memory addresses where the processor jumps to execute the corresponding subroutine.
The vector address is calculated using the formula: 8 × Interrupt Number.
Examples: TRAP, RST 7.5, RST 6.5, RST 5.5, etc.

Non-Vectored Interrupts do not have predefined addresses. The device must provide the address of the subroutine.
INTR is the only non-vectored interrupt in 8085.

3. Maskable and Non-Maskable Interrupts

Maskable Interrupts are those that can be disabled or ignored by the microprocessor using software instructions.
Examples: INTR, RST 7.5, RST 6.5, RST 5.5

Non-Maskable Interrupts cannot be disabled. These are used for critical tasks.
Example: TRAP, which is used in serious conditions like power failure. It has both level and edge triggering.

4. Interrupt Priority

When multiple interrupts occur simultaneously, the processor handles them according to a fixed priority order:

TRAP
RST 7.5
RST 6.5
RST 5.5
INTR

5. Interrupt Service Routine (ISR)

An Interrupt Service Routine is a special block of code executed when a specific interrupt is triggered. After the ISR completes, control returns to the main program.

6. Triggering Mechanism (Level and Edge Triggering)

Triggering means activating a circuit to respond to signals. There are two main types of triggering:

Level Triggering:
The circuit becomes active when the clock or control signal stays at a certain level (HIGH or LOW).
Example: INTR, RST 6.5, RST 5.5

Edge Triggering:
The circuit activates at the moment the signal changes from LOW to HIGH (positive edge) or from HIGH to LOW (negative edge).
Example: RST 7.5

TRAP uses both edge and level triggering to make it highly reliable.

#Interrupt8085 #InterruptsInMicroprocessor #Lecturelia #8085Microprocessor #MicroprocessorBanglaTutorial #CSEBangla #EngineeringBangla #VectoredInterrupt #NonVectoredInterrupt #8085Architecture #BanglaMicroprocessorLecture #TechInBangla #InterruptHandling #DigitalElectronicsBangla #8085Explained

Видео 🔴 Interrupts in 8085 Microprocessor | Bangla Tutorial | Lecturelia 🔴 канала Lecturelia - CSE বাংলা টিউটোরিয়াল