What is the external auxiliary memory of a microcomputer?

The external auxiliary storage of the microcomputer refers to the disk; the disk is the main storage medium of the computer, which can store a large amount of binary data, and can maintain data without losing it even after a power outage.

Microcomputer is referred to as "microcomputer" or "microcomputer". Because it has certain functions of the human brain, it is also called "microcomputer". Microcomputer is a small electronic computer composed of large-scale integrated circuits. It is a bare metal based on a microprocessor, equipped with internal memory, input and output (I/0) interface circuits and corresponding auxiliary circuits.

The external (auxiliary) storage of a microcomputer refers to: a disk.

Disk is the main storage medium of the computer. It can store a large amount of binary data and can keep the data from being lost even after a power outage.

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The disk used by early computers was a soft disk (soft disk, referred to as a floppy disk), and now the commonly used disk is a hard disk (hard disk) disk, referred to as hard disk).

Floppy Disk:

Floppy disk uses a soft polyester material to create a prototype negative, coated with magnetic material on both surfaces. Commonly used floppy disks have a diameter of 3.5 inches and a storage capacity of 1.44MB. Floppy disks read data through a floppy disk drive.

Hard disk:

The hard disk is composed of an aluminum alloy original plate coated with magnetic material. Each hard disk is composed of several magnetic discs.

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