1

00:00:00,166 --> 00:00:00,800

Hello,everyone

2

00:00:00,800 --> 00:00:04,233

Today let's learn about the concept of bus

3

00:00:05,233 --> 00:00:06,333

What is a bus?

4

00:00:07,666 --> 00:00:13,433

Bus: It is the line that transmits information between various functional parts of the computer

5

00:00:13,800 --> 00:00:15,333

it consists of wires

6

00:00:15,800 --> 00:00:19,100

According to the type of information transmitted by the computer

7

00:00:19,566 --> 00:00:25,933

the bus of the computer can be divided into a data bus, an address bus and a control bus

8

00:00:26,233 --> 00:00:32,733

They are used to transmit data information, address information and control signals respectively

9

00:00:33,500 --> 00:00:37,000

The common bus in our motherboard is the DMI bus

10

00:00:37,433 --> 00:00:41,533

DMI bus is used for communication between CPU and bridge

11

00:00:41,900 --> 00:00:47,500

There is also the memory bus, which is used for communication between the CPU and memory

12

00:00:47,933 --> 00:00:53,700

PCIE bus is used for communication between CPU and graphics card and peripherals

13

00:00:54,100 --> 00:01:03,300

The system management bus is the EC-connected battery, the EC-connected charging chip, and the connected temperature control devices

14

00:01:04,033 --> 00:01:12,800

The identity information of the memory which the CPU reads,etc.They also communicate through the system management bus

15

00:01:13,000 --> 00:01:19,633

LPC bus or eSPI bus is the communication bus between PCH and EC

16

00:01:20,400 --> 00:01:26,566

SPI bus is used by PCH or EC to read data in SPI ROM

17

00:01:27,166 --> 00:01:32,700

The HDA bus, which is what we call the sound card bus, is connected to the sound card chip

18

00:01:33,033 --> 00:01:41,633

In addition, there are USB 2.0, USB 3.0 and other buses for connecting external devices

19

00:01:41,966 --> 00:01:44,633

These are the common buses that we often see