Unit V: Instruction Cycle | BCA 3rd Semester Microprocessors Notes Pdf

The basic operation cycle of a computer is the instruction cycle (also known as the fetch-decode-execute cycle). It is the procedure by which a computer gets a program instruction from its memory, identifies the actions required by the instruction, and executes those actions. From the time the computer starts to the time it shuts down, the central processing unit (CPU) repeats this cycle indefinitely.

In this “Instruction Cycle – Microprocessors ” you will learn about the following topics:

1. Common Terminologies
2. T State, Instruction Cycle, Fetch Cycle, Execution Cycle, Machine Cycle
3. Instruction Cycle
4. Steps in Instruction Cycle
5. Step 1: Fetch the Instruction
6. Step 2: Decode the Instruction
7. Step 3: Read the Effective Address
8. Step 4: Execute the Instruction
9. Fetch Cycle
10. Decode, Execute
11. Machine Cycle Status and Control Signals
12. Interrupt Cycle

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BCA 3rd Semester Microprocessors Notes Pdf:

• Unit I: Introduction to Microprocessor
• Unit II: Basic Computer Architecture
• Unit III: Simple As Possible - 2(SAP-2)
• Unit IV: Intel 8085
• Unit VI: Basic Input/output and Read/write Operation
• Unit VII: Digital Interface
• Unit VIII: Input and Output Interfaces
• Unit IX: Overview of Intel 8086