A microcontroller is a small computer on a single integrated circuit that can be used to control electronic devices. It consists of a central processing unit (CPU), memory, and input/output (I/O) ports. Microcontrollers are used in many applications, such as automobiles, appliances, and medical devices. Boxing Blockchain is a distributed ledger technology that allows for secure, transparent, and tamper-proof transactions. Blockchain is used in many applications, such as cryptocurrency, supply chain management, and identity verification. Popular blockchain platforms include Ethereum, Bitcoin, and Hyperledger Fabric.