Question Bank (2 marks) · Q20
Q.Briefly explain Programming instruction.
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Programming (branching) instructions change the sequence of execution — jumps, conditional branches, subroutine calls and returns.
Programming instructions, also called branching or program-control instructions, decide the order in which the microcontroller executes code. Unconditional jumps (SJMP, LJMP, AJMP) transfer control to a new address; conditional branches (JZ, JNZ, JC, JNC, DJNZ) jump only when a tested condition is true; and call/return instructions (ACALL, LCALL, RET, RETI) invoke and return from subroutines and interrupt service routines. They let a progr …
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