What is a bus? What kinds of buses are there in microcomputers? What is the role of each?

The bus is a public communication trunk for transmitting information between various functional components of the computer. It is a transmission harness composed of wires. There are three buses in microcomputers: data bus, address bus and control bus; their functions are respectively It is: 1. Transfer data that needs to be processed or stored back and forth between the CPU and RAM; 2. Used to specify the address of the data stored in RAM; 3. Send the signal of the microprocessor control unit to the peripheral equipment.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

What is a bus? What kinds of buses are there in microcomputers? What is the role of each?

Bus (Bus) is a public communication trunk for transmitting information between various functional components of the computer. It is a transmission harness composed of wires.

The bus is an internal structure. It is a common channel for CPU, memory, input and output devices to transmit information. The various components of the host are connected through the bus, and the external devices are connected to the bus through the corresponding interface circuits. , thus forming a computer hardware system. In a computer system, the common channel for transmitting information between various components is called a bus. Microcomputers use a bus structure to connect various functional components.

Bus types in microcomputers:

The computer bus can be divided into data bus, address bus and control bus, which are used to transmit data, data address and control signals respectively. .

• Data Bus: Transfers data that needs to be processed or stored back and forth between the CPU and RAM.

• Address Bus: Used to specify the address of data stored in RAM (Random Access Memory).

• Control Bus: Transmits signals from the microprocessor control unit (Control Unit) to peripheral devices.

Data bus DB (Data Bus), address bus AB (Address Bus) and control bus CB (Control Bus) are also collectively called the system bus.

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