MEMORY ORGANIZATION IN 8051
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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PSW( Program Status Word)
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PC(Program Counter)
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SP(Stack Pointer)
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DPTR(Data Pointer)
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Detailed explanation-1: -The program status word (PSW) register is an 8-bit register, also known as flag register. It is of 8-bit wide but only 6-bit of it is used.
Detailed explanation-2: -Explanation: B register is used to store one of the operands for multiply and divide instructions. In other instructions, it may just be used as a scratch pad. Explanation: The set of flags of program status word contains the status information and is considered as one of the special function registers.
Detailed explanation-3: -The PSW includes the instruction address, condition code, and other information to control instruction sequencing and to determine the state of the CPU. The active or controlling PSW is called the current PSW. The PSW is so important because it keeps track of the progress of the system and the executing program.