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This article mainly introduces which buses are in the microcomputer system, the introduction in the article is very detailed, has a certain reference value, interested friends must read it!

The three kinds of buses in microcomputer system are address bus, control bus and data bus. Bus is an internal structure, which is a common channel for CPU, memory, input devices and output devices to transmit information.

There are generally three kinds of buses in microcomputer systems, namely, address bus, control bus and data bus.

Bus is a common communication trunk that transmits information between various functional components of a computer. It is a transmission harness composed of wires. According to the types of information transmitted by the computer, 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.

Bus is a kind of internal structure, which is a common channel for cpu, memory, input and output devices to transmit information. each part of the host computer is connected by the bus, and the external equipment is connected with the bus through the corresponding interface circuit, thus forming the computer hardware system. In a computer system, the common path through which information is transmitted between various components is called a bus, and a microcomputer connects each functional component with a bus structure.

Buses can be divided into five types according to their functions and specifications:

Data bus (Data Bus): transfers data that needs to be processed or stored back and forth between CPU and RAM.

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

Control bus (Control Bus): transmits the signal of the microprocessor control unit (Control Unit) to the peripheral device.

Extended bus (Expansion Bus): a bus for data communication between external devices and the host computer, such as ISA bus, PCI bus.

Local bus (Local Bus): an extended bus that replaces higher speed data transmission.

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