Q. Important status conditions of microcontroller 8051 is stored in :
Solution:
- PSW ( Processor Status Word ) stores important status conditions in 8051.
- It is also known as flag register.
- It is an 8-bit register.
- Only 6 bits of it are used by the 8051,the two unused bits are user-definable flags
- Four of the flags are called conditional flags, they indicate condition which results after an instruction is executed.
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