B25-26_FOC-Unit-1/Topic- 3: Instruction Codes

Опубликовано: 21 Май 2026
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Curious Computer Fundamental Notes on Unit 03
Question Bank

UNIT I: Basic Computer Organization and Design, Description of Basic Computer, Common Bus System, Instructions Codes, Computer, Registers, Computer Instructions, Instruction Cycle, Memory Reference Instructions, Register, Reference Instructions, Input-Output, and Interrupt.

Topic 3 — Instruction Codes
1. What is an instruction code? Give an example with binary format.
2. Explain the role of the opcode and address field in an instruction.
3. Differentiate between direct and indirect addressing modes with examples.
4. Define one-address, two-address, and three-address instructions with examples.
5. What is the use of a flag bit in an instruction code?

Best of Luck!!

NEXT:
Unit-01: Basic Computer Organization and Design

Topic-1: Description of Basic Computer
   • B25-26_FOC-Unit-1/Topic- 1: Description of...  
Topic-2: Common Bus System
   • B25-26_FOC-Unit-1/Topic- 2: Common Bus System  
Topic-3: Instruction Codes
   • B25-26_FOC-Unit-1/Topic- 3: Instruction Codes  
Topic-4: Computer Registers
   • B25-26_FOC-Unit-1/Topic- 4: Computer Regis...  
Topic-5: Computer Instructions & Instruction Cycle
   • B25-26_FOC-Unit-1/Topic- 5:Computer Instru...  
Topic-6: Memory Reference Instructions
   • B25-26_FOC-Unit-1/Topic- 6: Memory Referen...  
Topic-7: Register Reference Instructions
   • B25-26_FOC-Unit-1/Topic- 7: Register Refer...  
Topic-8: Input-Output and Interrupt
   • B25-26_FOC-Unit-1/Topic- 8: Input-Output a...  


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