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Q134Easy8051 Microcontroller

8051 आर्किटेक्चर के संबंध में निम्नलिखित कथनों पर विचार कीजिए:
1. यह एक 8-बिट माइक्रोकंट्रोलर है।
2. इसमें हार्वर्ड आर्किटेक्चर है।
3. इसमें अलग प्रोग्राम और डेटा मेमोरी स्पेस हैं।
उपरोक्त में से कौन-सा/से कथन सही है/हैं?

उत्तर और चरणबद्ध हल
सही उत्तर: D. 1, 2 और 3
संक्षिप्त व्याख्या

D — 1, 2 और 3। 8051 एक 8-बिट, हार्वर्ड-शैली माइक्रोकंट्रोलर है जिसमें कोड और डेटा मेमोरी स्पेस अलग-अलग हैं।

विस्तृत हल (मूल भाषा में)

Statement-wise Verification

  • Statement 1 - Correct.
    It is an 8-bit microcontroller.
    The classic 8051 is an 8-bit Harvard-style microcontroller with separate code and data spaces.
  • Statement 2 - Correct.
    It has Harvard architecture.
    The classic 8051 is an 8-bit Harvard-style microcontroller with separate code and data spaces.
  • Statement 3 - Correct.
    It has separate program and data memory spaces.
    The classic 8051 is an 8-bit Harvard-style microcontroller with separate code and data spaces.

Core Concept

The classic 8051 is an 8-bit Harvard-style microcontroller with separate code and data spaces. The standard core has 4 KB on-chip program ROM and 128 bytes internal RAM, supports external memory, multiple interrupts and configurable interrupt priority. On reset the stack pointer is 07H, so the first PUSH stores at 08H.

Formula / Key Relationship

Reset SP=07H; classic internal RAM=128 bytes; standard ROM=4 KB.

Why the Other Options Are Wrong

Option A is incorrect because it omits correct statement(s) 3. Option B is incorrect because it omits correct statement(s) 1. Option C is incorrect because it omits correct statement(s) 2.

Exam Shortcut / Approach

Remember 07H for stack pointer reset.

Common Mistake

00H is not the reset value of the 8051 stack pointer.

Quick Revision

8-Bit Harvard Architecture is linked with 8051 Architecture, 8051 Microcontroller and Microprocessors and Microcontrollers. Remember 07H for stack pointer reset.

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