8051 INSTRUCTION SET ADDRESSING MODES
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The group of instruction that is associated with the single bit operations of 8051.
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Boolean Instructions
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Arithmetic Instructions
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Data transfer Instructions
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Branching Instructions
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Explanation:
Detailed explanation-1: -The Carry bit, other than serving the functions of a Carry bit in arithmetic operations, also serves as the “Accumulator” for a number of Boolean operations. The bits RS0 and RS1 are used to select one of the four register banks shown below.
Detailed explanation-2: -Carry bit in PSW is used as a single-bit accumulator for Boolean operations. Carry also has a mnemonic representation (CY) which can be used in connection with non-carry-specific instructions. Example: Compute the logical AND of the input signals on bit 0 and 1 of Port 1 and output the result to bit 2 of Port 1.
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