A block diagram is a diagram of a system where the principal parts or functions are represented by blocks connected by lines that shows the relationships of the blocks. As per the image, the 8051 Microcontroller block diagram shows the central processing unit, bus control, on-chip RAM, on-chip ROM, and other external interrupts. It should be noted here that the 8051 microcontroller is an 8-bit microcontroller created by Intel and has an 8-bit processor that simply means that it operates on 8-bit data at a time. The 8051 microcontroller block diagram shows that it is built with 40 pins DIP (dual inline package), 4kb of ROM storage and 128 bytes of RAM storage, two 16-bit timers. Also, the 8051 microcontroller block diagram shows that it consists of Flash (EEPROM), I/O Ports, and control logic for communication between the peripherals.
