8051 एड्रेसिंग मोड के संबंध में निम्नलिखित कथनों पर विचार कीजिए:
1. इमीडिएट एड्रेसिंग में ऑपरेंड निर्देश में ही शामिल होता है।
2. डायरेक्ट एड्रेसिंग स्पष्ट रूप से मेमोरी एड्रेस का उपयोग करती है।
3. इनडायरेक्ट एड्रेसिंग में एड्रेस रखने के लिए रजिस्टर का उपयोग होता है।
उपरोक्त में से कौन-सा/से कथन सही है/हैं?
उत्तर और चरणबद्ध हल
D — 1, 2 और 3। इमीडिएट: MOV A,#25H (ऑपरेंड निर्देश में); डायरेक्ट: MOV A,30H (एड्रेस स्पष्ट); इनडायरेक्ट: MOV A,@R0 (R0/R1 में एड्रेस)।
विस्तृत हल (मूल भाषा में)
Statement-wise Verification
- Statement 1 - Correct.
Immediate addressing includes operand in instruction.
Remember 07H for stack pointer reset. - Statement 2 - Correct.
Direct addressing uses memory address explicitly.
The standard core has 4 KB on-chip program ROM and 128 bytes internal RAM, supports external memory, multiple interrupts and configurable interrupt priority. - Statement 3 - Correct.
Indirect addressing uses register to hold address.
Remember 07H for stack pointer reset.
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
Immediate Direct and Indirect Addressing is linked with Addressing Modes, 8051 Microcontroller and Microprocessors and Microcontrollers. Remember 07H for stack pointer reset.
Consider the following statements regarding 8051 Addressing modes:
1. Immediate addressing includes operand in instruction.
2. Direct addressing uses memory address explicitly.
3. Indirect addressing uses register to hold address.
Which of the above statements is/are correct?
Answer & step-by-step solution
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. Key relation: Reset SP=07H; classic internal RAM=128 bytes; standard ROM=4 KB.
Exam focus: Remember 07H for stack pointer reset. Common trap: 00H is not the reset value of the 8051 stack pointer.
Statement-wise Verification
- Statement 1 - Correct.
Immediate addressing includes operand in instruction.
Remember 07H for stack pointer reset. - Statement 2 - Correct.
Direct addressing uses memory address explicitly.
The standard core has 4 KB on-chip program ROM and 128 bytes internal RAM, supports external memory, multiple interrupts and configurable interrupt priority. - Statement 3 - Correct.
Indirect addressing uses register to hold address.
Remember 07H for stack pointer reset.
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
Immediate Direct and Indirect Addressing is linked with Addressing Modes, 8051 Microcontroller and Microprocessors and Microcontrollers. Remember 07H for stack pointer reset.
8051 એડ્રેસિંગ મોડ અંગે નીચેનાં વિધાનો ધ્યાનમાં લો:
1. ઇમિડિએટ એડ્રેસિંગમાં ઓપરેન્ડ સૂચનામાં જ સમાવિષ્ટ હોય છે.
2. ડાયરેક્ટ એડ્રેસિંગ સ્પષ્ટ રીતે મેમરી એડ્રેસનો ઉપયોગ કરે છે.
3. ઇનડાયરેક્ટ એડ્રેસિંગમાં એડ્રેસ રાખવા રજિસ્ટરનો ઉપયોગ થાય છે.
ઉપરોક્તમાંથી કયું/કયાં વિધાન સાચું/સાચાં છે?
જવાબ અને પગલાવાર ઉકેલ
D — 1, 2 અને 3. ઇમિડિએટ: MOV A,#25H (ઓપરેન્ડ સૂચનામાં); ડાયરેક્ટ: MOV A,30H (એડ્રેસ સ્પષ્ટ); ઇનડાયરેક્ટ: MOV A,@R0 (R0/R1માં એડ્રેસ).
વિગતવાર ઉકેલ (મૂળ ભાષામાં)
Statement-wise Verification
- Statement 1 - Correct.
Immediate addressing includes operand in instruction.
Remember 07H for stack pointer reset. - Statement 2 - Correct.
Direct addressing uses memory address explicitly.
The standard core has 4 KB on-chip program ROM and 128 bytes internal RAM, supports external memory, multiple interrupts and configurable interrupt priority. - Statement 3 - Correct.
Indirect addressing uses register to hold address.
Remember 07H for stack pointer reset.
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
Immediate Direct and Indirect Addressing is linked with Addressing Modes, 8051 Microcontroller and Microprocessors and Microcontrollers. Remember 07H for stack pointer reset.
More 8051 Microcontroller questions