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SOFTWARE ENGINEERING

SOFTWARE

  1. Instructions (computer programs) that when executed provide desired functions and performance.
  2. Data structures  that enables the programs to adequately mainupulate information.
  3.  Documents that describe the operation and use of the programs.
                                                                                                                                                                                                       There are three main things-
    PROGRAMS- is a combination of source code and object code.
    DOCUMENTATION-It consist of different types of manuals
    a) Analysis
    b) design
    c) implementation
    d) testing
    OPERATING PROCEDURES-It consist of instructions to setup.
    a) User manual
    b) operational manual
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COMPUTER TECHNIQUES

             WAY OF RECORDING WORK 

                  DONE IN YOUR PC

  1. Firstly to open the  Windows R.
  2. And then write PSR  in Run command which means Problem Steps Recorders.
  3. Click Enter key.
  4. The Start Record option will be shown.Click in this option.
  5. Recording will be started.You can do any work in the PC as you want.
  6. Save the recording to any name.
  7. To click the  stop record.
  8. And to check the recording which will be save by using the Steps recorder option.

COMPUTER TIPS

WAY OF CHECKING INFORMATION OF YOUR PC

1) Firstly go to the RUN command using WINDOWS R.

2)In this RUN command we write a    dxdiag.It means  Direct X Diagnostic Tool.

3) Click enter key.

4) Information of your PC will be shown.

 

 CREATE A PERSONAL DIARY                                                                                                    

  1. Press a right click.
  2. Click the NEW option.
  3. Then,click Text Document and then Log Text.
  4. click Enter key.
  5. Click Log.
  6. After click Enter key.
  7. And click the Save option.
  8. Your personal diary will be created.

HOW TO SHOW ALL ICONS

  1. Click  ALT+CTRL+DELETE options.
  2. Click on Start Task Manager.
  3. Then click new task option.
  4. After that click the Explorer.exe option.
  5. And then click  Enter Key.

                                                                                       HOW TO OPEN A DOS (DISK OPERATING SYSTEM)

                                                                                                       Click WINDOWS+R key.

 

 

BASIC COMPUTER DESIGN

    HARDWARE COMPONENTS

  1. Memory unit with 4096 words of 16 bits each.
  2. There are 9 registers (AR,PC,DR,AC,IR,TR,OUTR,INPR and SC.
  3. There are 7   flipflops (I,S,E,R,IEN,FGI,FGO).
  4. There are 2 Decoders (3*8 Operation Decoder,4*16 TIMING DECODER)
  5. There are 16 bit common bus.
  6. CONTROL LOGIC GATES.
  7. ADDER and LOGIC CIRCUIT connected to the input of AC.

       DATABASE MANAGEMENT

         SYSTEM (DBMS)

    Database Management System is framework programming for making and overseeing databases. The DBMS gives clients and developers a deliberate approach to make, recover, overhaul and oversee information. A universally useful DBMS is intended to permit the definition, creation, questioning, redesign, and organization of databases. Understood DBMSs incorporate MySQL, PostgreSQL, MongoDB, Microsoft SQL Server, Oracle, Sybase, SAP HANA, and IBM DB2. A database is not for the most part compact crosswise over various DBMSs, but rather unique DBMS can interoperate by utilizing benchmarks, for example, SQL and ODBC or JDBC to permit a solitary application to work with more than one DBMS.

    Three components of DBMS-

    1)The physical database: the gathering of records that contain the information

    2)The database motor: the product that makes it conceivable to get to and alter the substance of the database

    3)The database plot: the determination of the consistent structure of the information put away in the database.

    Elements of a DBMS-

    A DBMS makes it workable for clients to make, alter and upgrade information in database records. Once made, the DBMS makes it conceivable to store and recover information from those database records.

    Simultaneousness: simultaneous get to (signifying ‘in the meantime’) to a similar database by different clients

    Security: security principles to decide get to privileges of clients

    Reinforcement and recuperation: procedures to go down the information frequently and recoup information if an issue happens

    Uprightness: database structure and guidelines enhance the trustworthiness of the information

    Information portrayals: an information word reference gives a depiction of the information.

    Advantages of DBMS-

    1)A DBMS gives robotized strategies to make, store and recover information. It might require some investment to set up these techniques, yet once set up, a DBMS can make monotonous manual assignments a relic of past times.

    2)A DBMS decreases information repetition and irregularity. Have you ever had diverse variants of a similar document on your PC hard drive? A similar thing happens in associations. An all around planned DBMS will take out repetition.

    3)A DBMS takes into account simultaneous access by different clients, each with their own particular part. A few clients just need to see the information, some add to including new information, while others outline and deal with the database – all in the meantime!

    4)A DBMS expands security and unwavering quality. Database directors are in charge of making reinforcements of databases, controlling access and, when all is said in done, ensuring it works the way it was planned.

    Four basics sorts of Database-

    1)Various leveled databases.

    2)Organize databases.

    3)Social databases.

    4)Protest arranged databases

                                                                                                                                                                                                             

COMPUTER TRICKS

                HOW TO HIDE A  E-DRIVE                                                 

  1. To open windows R.Then write DISKPART.
  2. Click  YES.
  3. The DOS window is open.
  4. Then write
  5. DISKPART>List volume
  6. DISKPART>Select volume 1
  7. DISKPART>remove letter E
  8. DISKPART>select volume 1
  9. DISKPART>assign letter E
  10. Then we go Control pannel and then click.
  11. All control panel items are opened.
  12. Next we click Administrative tools inside two options are opened Computer management and Disk management click in both.
  13. Hide Drive is opened in this right click and change drive option are shown to click in this option.
  14. Last All drive option letter is opened click ENTER and OK
  15. Your E-drive is Hide.
         

             WAY OF CHECKING

               SYSTEM INFORMATION

    1)Firstly we open the   RUN command.

    2) In RUN command we write MSinfo32.

    3) Click ENTER key.

    4) The SYSTEM INFORMATION will be shown.

                                                                                           HIDE DATA IN FILES

    1)Firstly click Right click.

    2) Then click properties.

    3)Click security option.

    4)And click administrator then ticks DELETE option.

    5) Click Yes.                                                                                                                                                                                                                                                                                                                               

COMPUTER SECURITY TRAINING

HOW TO SHUTDOWN COMPUTER WITH RUN COMMAND

1) START

2)RUN

3)WRITE DOWN THIS CODE IN RUN COMMAND BOX

4) SHUTDOWN -S -T 00

5) THEN CLICK OK

      HOW TO TAKE A SCREENSHOT ON PC

  1. Windows + print screen
  2. Windows FN + printscreen

                                                                                                 HIDE  A  DATA  IN  PD

    1.To open the RUN command.

    2. In RUN command we write regedit.

  3. Click OK.And then Click YES.4. Go to COMPUTER option.And click HKEY Local Machine.

    5.Then click system option.In this we click current control set option.

    6. Services option will be given click in this option.

    7. Then option USB store after open click START.

    8. The no. is given in this block to remove this no. and write 4 no.Then click OK.

    9. Restart your PC,your PD will not be shown.

    10. And if you want to correct this  PD.

    11.  You already give the no.4,to remove this no. and write 3 over there.

    12. Restart your PC,again your data in PD will be shown.