How many aspects should be involved in hardware learning?

This is what I feel should be deepened in terms of hardware maintenance. In fact, the most important thing to do is to sum up the problems in my work and sum up my experience!

Hardware learning summary:

1. how computers work

If you want to know why such a fault occurs and why it should be solved, you need to understand the principles.

2. Common Fault Analysis

Pay attention to recording the problems encountered and solutions in your daily work. It is best to think about the problems.

The hardware maintenance option basically records the problems I encountered.

3. System Security

A. Anti-Virus

B. Fire Prevention

C. Anti-Trojan

D. Anti-Spyware

4. Lan Problems

A. Domain

B. Lan

C. Network Management Tools

5. Operating System

A. doscommand

201706.03.06

Common DOS Commands

DirDisplays files and folders (directories ).
Usage: dir [file name] [Option]

It has many options, such as/A indicating that all files (including files with implicit and system attributes) are displayed,/s indicating that files in subfolders are also displayed, And/P indicates that all files are displayed on the split screen, /B indicates that only the file name is displayed, and so on.

For example, Dir A *. EXE/A/P
This command displays all files (folders) starting with a and suffixed with EXE in the current folder on the screen ).

CDOr chdir to change the current folder.
Usage: CD [Folder name]
If no folder name exists, the current path is displayed.

MDOr create a folder in mkdir.
Usage: MD folder name

RdOr rmdir to delete the folder.
Usage: RD folder name
Note: The folder must be empty.

DelOr erase to delete the file.
Usage: del/Erase file name

CopyCopy an object.
Usage: copy file name 1 [file name 2] [Option]
For example, copy/B a + B C
This command combines two binary files a and B into one file C.

TypeDisplays the file content.
Usage: type file name

RenOr Rename to change the file name and folder (directory) Name.
Usage: Ren file (folder) Name 1 file (folder) name 2

EditEdit files, you can also edit binary files and multiple files in MS-DOS 7.x.
Usage: Edit [file name] [Option]
For example, edit/70 C:/command. com
This command is used to edit the C:/command. com file in binary mode.

FormatFormat the disk.
Usage: Format drive [Option]

There are many options, such as/Q is quick formatting,/utable shows unconditional formatting (that is, the unformat command cannot be used to restore),/V specifies the volume name of the disk, and so on. It also has many undisclosed parameters.

MemDisplays the memory status.
Usage: Mem [Option]

There are also a lot of options, such as/C can list the memory usage of all programs,/D is to display the memory resident program and the device driver status and other details, /f shows the total amount of idle memory,/M shows the module information in the memory, and/P shows the sub-screen display. There are also hidden/A options to display HMA information.

You can also change the name of a file or folder by moving the file or folder.
Usage: Move a file [Folder] 1 file [Folder] 2
For example, move C:/*. exe d:
This command can be used to move all files with the extension EXE under the C root folder to the D Drive.

XcopyCopy a file or folder.
Usage: xcopy file [Folder] Name 1 [file [Folder] Name 2] [Option]

It has many options, for example,/s can copy files in the entire folder (including subfolders),/e specifies to include empty folders, /V indicates the correctness of the copied file after copying,/y indicates confirmation, and so on.

CLSClear the screen.
Usage: CLS

SysTransmits a system file (such as Io. sys) from one place to a specified drive.
Usage: SYS folder name [Drive]
For example, sys C:/DOS:
This command transfers the system files in the C:/DOS folder to drive.

DateDisplay or set a date.
Usage: Date [date]

TimeDisplay or set the time.
Usage: time [time]

DOS also comes with some other commands, such as sort and find.

In addition to the built-in DOS commands, there are also many other enhanced commands that can greatly enhance the DOS Function. Many of these software can be downloaded from "DOS software.

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B. Registry

C. Common System Tools

6. Peripherals

A. Printer

B. Scanners

C. USB Interface Device

7. Use and settings of office software

Word, execl, outlook, etc.

 

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Several tools and software that should be used

1. At least one PE optical start disk will be used. For example, Windows PE

2. clone software, such as Ghost 8.0

3. Hard Disk management tools, such as partition magic

4. Use of ERD Emergency Storage

5. dossystem startup and basic operations

201706.03.04

Relevant content will be updated later ......