[In-depth] The Introduction to Microprocessors 2022

Have you wondered what the microprocessor is? The microcontroller and microprocessor is similar but they are totally different, today our team will clear everything about it, let's read on.

Ⅰ. What is a Microprocessor

Microprocessor is a central processing unit made up of one or a couple of large-scale integrated circuits. These circuits carry out the functions of control parts and also arithmetic logic components.

The microprocessor can complete operations such as fetching instructions, executing instructions, and exchanging information with external memory and logic components, and is the operation control part of the microcomputer. It can create a microcomputer with memory as well as peripheral circuit chips.

The microprocessor consists of arithmetic logic unit (ALU, Arithmetic Logical Unit); accumulator and general register set; program counter (also called instruction pointer); timing and control logic components; data and address latches/buffers; internal bus composition. Among them, the arithmetic unit and the controller are its main components.

Ⅱ. The Internal Structure of the Microprocessor

The most basic functional structure of a microprocessor consists of an operator, a controller, a register set and an internal bus.

The figure gives the internal structure diagram of an 8-bit microprocessor, which includes: operator, register group (which includes: accumulator, status register, program counter and other functional register groups), instruction hosting decoder, address register, data buffer, internal data bus, external leads (including: address signal line, data signal line, control/status signal line), etc. Each part plays a different role in the microprocessor.

Read on in this article from EmbedIC: [In-depth] The Introduction to Microprocessors 2022