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.

ADD Instruction in Intel 8051 (MCS-51) Microcontroller

The ADD instruction is … Read More

Main Features of 80C51, 87C51 and 80C31 Microcontrollers

All these three types of microcontrollers are 8-bit manufactured by NXP semiconductors with embedded Intel processors.

Some of the key features of these microcontrollers are listed in the following sections but it is important to note that, you can get … Read More

The MOV Instruction in Intel 8051 (MCS-51) Microcontroller

The MOV Instruction in Intel 8051 (MCS-51) Microcontroller

The MOV instruction tells the CPU to move (in actual fact COPY) the source operand to the destination operand.

MOV destination, source   ; copy source to destination

Programming in assembly language requires that at least you understand the architecture of … Read More

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 … Read More