What are the advantages of USB flash drives, portable hard disks, and optical disc burners, analyze

Personal point of view U disk, the capacity is relatively small, easy to carry, **low, but sometimes there is no way to copy one, although there are 8 16g, but relatively speaking** is not very good There are also cheap ones, but the quality is not known It all depends on luck.

Mobile hard disk,The capacity is not to say,You can use it directly as a system,Read speed is good,There are some software that can be directly installed in it,No need to pack it anymore,But **Relatively speaking, it's relatively high about 300-400 And the volume is large, I don't think it's very convenient to carry And you have to bring a blood vessel (data connection line) at any time, if you have a bag, it's nothing.

Disc burner.

This is just like the name I want a disc and a burner And I want a burning software Disc is generally not used much now, unless you are installing a computer for others every day, the software is used a lot, I rarely see someone use it, and you ask someone to use the computer to make something for you, and when you don't say that you have the first two storage devices, they will generally give you a CD, which is good and cheap, that is, be careful when you carry it, otherwise you will hang flowers or have cracks. The disc I used was a reinstall system, hehe.

It seems that the information in the CD is generally engraved and cannot be deleted.,Personal analysis is completed!

Under the volume of the U disk, it is easy to carry, but the capacity is a little smaller than that of the mobile disk! Generally, the maximum is 16g, and now the 8G USB flash drive is about 120 yuan! It's okay to drop on the ground, it's generally not easy to break, and now the U disk of the big factory is generally guaranteed for life, so you don't have to worry about breaking it and losing data!

Some USB flash drives can be encrypted, and you can set your own password!

Portable hard drives, generally in inches. There are two kinds of inches, and it is also very convenient to carry, with capacities ranging from 20g to 500g! Portable hard drives are more likely to break than USB flash drives, and if you fall to the ground, most of them will break!

Hard drives can also be encrypted! Set a password, and others will see the contents!

The disc burner is only used to burn *** VCD CDs, and cannot be used to store data! Only *** VCD CD These discs can store data, *** capacity is generally in VCD690M! VCD has long been phased out!

The general *** can only be read but not written, that is, you have saved the data for the first time, and you can't modify it later! There are also *** who can read and write many times, but it is much more expensive to accompany! USB flash drive portable hard disk is indeed much more convenient!

One of the most important metrics for measuring a disc burner is its writing capacity (speed).

Advantages of burning discs:

Cheap, drop-proof and easy to preserve.

Disadvantages of burning discs:

There may be a problem that different brands of optical drives cannot read the disk. Problems such as deterioration of recording quality at high speeds.

Advantages of portable hard drives:

It is easy to read and write, easy to carry, and has a small shape and huge capacity.

Disadvantages of portable hard drives:

Afraid of falling, once broken, the loss is huge, relatively expensive.

Hard disk: ** is more expensive, 1 yuan = 1g a little more. Advantages: stable, easy to read, easy to carry, conducive to preservation.

Burning disc: cheap, *** 1 yuan = a little more. It is suitable for transferring information to others at one time, such as using a USB flash drive to transfer it without returning it, the cost is too large, and so on. Disadvantages, inconvenient to carry, not conducive to preservation, easy to damage. But.

Ordinary burning disks, disposable, can not be changed after burning.

The hard drive can be changed.

They are not stored in the same way.

A hard disk is a primary computer storage medium consisting of one or more discs made of aluminum or glass.

These discs are covered with ferromagnetic material. The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

U disk is a kind of flash memory, also called flash disk, USB disk, the biggest feature is: small, large storage capacity, cheap. It is one of the removable storage devices.

The hard disk is relatively large, the USB disk is relatively small (size), the unit capacity of the hard disk is much cheaper than the USB flash drive, the mainstream USB flash drive is about 1G, and the mainstream mobile hard disk is 160G.

Summary: Large capacity** cheap but more afraid of vibration than USB flash drive, size and weight are also larger, U disk is small and easy to carry but expensive capacity is also limited, hard disk can store a lot of things.

Hard disks have a large capacity and are relatively expensive. Slow down.

U disk, small capacity, relatively fast speed, cheaper.

In terms of volume, mobile hard disks are large, U disks are small, and mobile hard disks consume more power than U disks.

Personal opinion. U disk, the capacity is relatively small.

Easy to carry. **Inexpensive.

But sometimes you can't copy one of them.

Although there are 816g, it is relatively not very good.

There are also cheap ones.

But the quality is not known.

It's all about luck. Mobile hard disk,The capacity is not to say,You can use it directly as a system,The read speed is also good,There are some software that can be directly installed in it,No need to package it,But **Relatively speaking, it's about 300-400.。

And the crack is large.

It is not very convenient to carry.

Disc burner.

This one is just like the name.

Ask for a disc.

and a recorder.

Also, I want a burning software.

Optical discs are generally not used much now, unless you are installing computers and software for others every day, then you use it a lot.

It's rare for me to see someone using a hole.

Also, you are out there asking someone to use the computer to make something for you.

When you don't say you have the previous 2 types of storage devices.

Usually they will give you a disc.

Cheap and fine. Be careful when carrying it, otherwise you will hang flowers or have cracks.

The disc I used was a reinstall system, hehe.

It seems that the information in the disc is usually engraved and cannot be deleted.

Personal analysis is complete!