Question:
8051 series has how many 16-bit registers?
8051 series has how many 16-bit registers?
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8051 has two 16-bit registers: PC and DPTR.
Updated On: Jul 2, 2026
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The Correct Option is A
Solution and Explanation
Concept:
8051 microcontroller has a set of registers with specific sizes.
Step 1: Identify 16-bit registers Program Counter (PC) is 16-bit.
Step 2: Stack Pointer Stack Pointer is 8-bit, not 16-bit.
Step 3: Data Pointer (DPTR) DPTR is also a 16-bit register.
Step 4: Count them Two registers: PC and DPTR.
Step 5: Conclusion \[ \boxed{2} \]
Final Answer: \[ \boxed{(A)} \]
Step 1: Identify 16-bit registers Program Counter (PC) is 16-bit.
Step 2: Stack Pointer Stack Pointer is 8-bit, not 16-bit.
Step 3: Data Pointer (DPTR) DPTR is also a 16-bit register.
Step 4: Count them Two registers: PC and DPTR.
Step 5: Conclusion \[ \boxed{2} \]
Final Answer: \[ \boxed{(A)} \]
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