MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -BIU takes care of all data and addresses transfers on the buses for the EU like sending addresses, fetching instructions from the memory, reading data from the ports and the memory as well as writing data to the ports and the memory.

Detailed explanation-2: -The Data Bus Interface (DBI) enables both parts of the SMC and the additional memory controller to share the external address and data buses, by only selecting one device to drive them at a time.

Detailed explanation-3: -A bus interface unit consists of a bus interface circuit which is responsible for responding to all signals that go to the processor, and generating all signals that go from the processor to other parts of a system. A USB interface connects more than computers and peripherals.

Detailed explanation-4: -The instruction queue is 6-bytes in length, operates on FIFO basis, and receives the instruction codes from memory. BIU fetches the instructions meant for the queue ahead of time from memory. In case of JUMP and CALL instructions, the queue is dumped and newly formed from the new address.

Detailed explanation-5: -A microprocessor is a Large Scale Integration (LSI) component that implements most of the functions of a processor on a single silicon chip. It consists of two units:the arithmetic and logic unit (ALU) and the control unit (CU).