Rotate and Swap Operations The ability to rotate data is useful for inspecting bits of a byte without using individual bit opcodes. The A register can be rotated one bit position to the left or right with or without including the C flag in the rotation. If the C flag is not included, then the […]
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8051 Logical Operations
8051 Logical Operations Byte-Level Logical Operations and Bit-Level Logical Operations
Introduction One application area the 8051 is designed to fill is that of machine control. A large part of machine control concerns sensing the on-off states of external switches, making decisions based on the switch states. and then turning external circuits on or off. Single point sensing and control implies a need for byte and […]
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