What is the difference between INX H and INR H ?

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Question

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NIELIT Scientific Assistant ECE 5 Dec 2021 Official Paper

Both the instructions, Increment the content of H register
Increment the content of HL register pair and increment the content of only Register H respectively
It depends on the previous instruction executed
None of the above

Answer 1

The correct option is 2

INX H (Increment HL Register Pair):
- This instruction increments the 16-bit content of the HL register pair.
- The HL register pair is treated as a single 16-bit register.
- For example, if HL contains 2000H, after INX H, HL will contain 2001H.
INR H (Increment Register H):
- This instruction increments the 8-bit content of the H register only.
- The L register is not affected.
- For example, if H contains 30H, after INR H, H will contain 31H.