How many T-states are required to execute the following instruction? MVI A,16H A) 4 T-states B) 7 T-states C) 10 T-states D) 14 T-states

To determine the number of T-states required to execute the instruction MVI A, 16H, let's analyze the instruction based on the operations of the microprocessor.

Breakdown of the Instruction

1. Instruction Format: MVI A, data is an instruction to move immediate data into register A. The immediate data here is 16H (hexadecimal).
2. Microprocessor Operation:
   • MVI A, data typically requires fetching the opcode and then fetching the operand (immediate data).
   • Each of these actions consumes a certain number of T-states (machine cycles).

Relevant Concepts

1. Opcode Fetch: Generally, fetching the opcode requires 4 T-states.
2. Immediate Data Fetch: Fetching the immediate data (16H) typically requires an additional 3 T-states.

Analysis and Detail

1. Opcode Fetch:
   • 4 T-states for fetching the opcode of the MVI instruction.
2. Data Fetch:
   • 3 T-states for fetching the immediate value (16H).

Verify and Summarize

• Total T-states = Opcode Fetch T-states + Immediate Data Fetch T-states
• Therefore, Total T-states = 4 + 3 = 7 T-states.

Final Answer

Based on the above breakdown, the correct answer is B) 7 T-states.