Tag: MCS-51 microcontroller
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ADD Instruction in Intel 8051 (MCS-51) Microcontroller
The ADD instruction tells the microcontroller’s CPU to add the source byte to register A and put the result in register A. Recall, A is the accumulator register typically used for all arithmetic and logic instructions. The ADD instruction is usually in the following form: ADD A, source ; ADD the source operand to the…
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The Basic Structure of Intel 8051 Microcontroller
The Intel 8051 also known as MCS-51 is an 8-bit microcontroller and one of the most popular microcontrollers. The Intel 8051 has four parallel input/output ports; ports 0, 1, 2 and 3. Ports 0, 2 and 3 also have alternative functions. The Intel 8051AH version has 4K bytes ROM, 128 bytes RAM, two timers, and…