Computer read operation refers to

The read operation of the computer refers to the operation of obtaining data from the hard disk; that is, the computer writes the memory address to the address bus, then the memory puts the data on the data bus, and finally reads the data from the data bus. operating process.

What is the read operation of the computer? Simply put, a computer read operation is an operation of obtaining data from the hard disk, just like a person reading a book. The write operation is to write data to the hard disk, just like we write.

In order to exchange one byte of data with the memory or I/O port, the CPU needs to perform a bus operation. According to the direction of data transmission, bus operations can be divided into two types: read operations and write operations; according to different objects of read/write, bus operations can be divided into

memory read/write

and I/O read/write operations.

The computer first writes the memory address to the address bus, and the memory puts the data on the data bus, so that the computer can read the data from the data bus.

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