Introduction - If you have any usage issues, please Google them yourself
1, MCS-8051 Series Single-chip 8-bit word length is, there are 40 pin, 96 series of word length is 16. MCU features small size, low cost, full-featured. 2,8051 biggest single-chip memory is characterized by instruction memory and data memory addressing separately, Px parallel port address is unified with the data memory addressing, or belong to the memory.