MCQ Practice Question Microprocessors & Microcontrollers8051 Registers The 8051 DPTR register is how many bits wide? A8 bits B16 bits C20 bits D32 bits Show AnswerHide AnswerReport an error Correct Answer: B. 16 bits Explanation: DPTR is a 16-bit data pointer composed of DPH and DPL.Reference: Standard microprocessors and microcontrollers: 8051 registers