Development board is a printed circuit board for embedded system development, including a series of hardware components such as data path/bus, memory, CPU, external resource interface, input device, output device, etc. Development boards are usually customized by embedded system developers as per their development needs.
The development board is basically a printed circuit board on the circuit and hardware to facilitate experiments with certain microcontrollers. Suppose you want to work on a microcontroller-based project, but in order to be able to use the microcontroller, you have to set up a bunch of circuits and hardware on your breadboard every time. Obviously, this can be frustrating, especially if some parts are the same every time, like the power circuit. In addition, there are some specific hardware circuits, such as buttons and LEDs, which are very helpful for testing and debugging. All the hardware and circuitry has been assembled, making experiments and general prototyping much easier.
In general, the components of a development board include:
1. Power supply circuit
2. Programming interface
3. Basic input circuits
4. Basic output circuit
5. Input/output (I/O) pin access
