Subtraction Subtraction can be done by taking the 2’s complement of the number to be subtracted, the subtrahend, and adding it to another number, the minuend. The 8051, however, has commands to perform direct subtraction of two signed or unsigned numbers. Register A is the destination address for subtraction. All four addressing modes may […]
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8051 Arithmetic Operations
8051 Arithmetic Operations Flags, Incrementing and Decrementing,AND Addition
Introduction Applications of microcontrollers often involve performing mathematical calculations on data in order to alter program flow and modify program actions. A microcontroller is not designed to be a "number cruncher," as is a general-purpose computer. The domain of the microcontroller is that of controlling events as they change (real-time control). A sufficient number of […]
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