Friday, 26 September 2014

SOME IMPORTANT ABBRIBATION OF COMPUTER

-: SOME  IMPORTANT  ABBRIBATION OF COMPUTER:-

ABISO            : ADVANCED BASIC INPUT OUTPUT SERVICES

ISO                 :INTERNATIONAL ORGANISATION FOR STANDARDISATION

OSI                 :OPEN SYSTEM INTERCONNECTION

ASCII              :AMERICAN STANDARD CODE FOR                                                                           INFORMATION  INTERCHANGE                                                                                          

AUTOEXC.BAT :AUTOMATICALLY EXECUTED BATCH

BIOS                   :BESIC INPUT OUTPUT SYSTEM


BPS                     :BIT PER SECOND

CBIOS                 :CAPABILITY BASIC INPUT OUTPUT SYSTEM


CD-I            :COMPACT DISK INTERACTIVE

CD-R           :COMPACT DISK RECORDABLE

CD ROM     :COMPACT DISK READ ONLY MEMORY

CPU            :CENTRAL PROCESSING UNIT

CGA            :COLOR GRAPHICS ADAPTER

CMOS         :COMPLEMENTARY MENTAL OXIDE 
                      SEMICONDUCTOR

CRT             :CATHODE RAY TUBE

MFM          :MODIFIED FREQUENCY MODULATION

DTR            :DATA TRANSFER RATE

DCE            :DATA COMMUNICATION EQUIPMENT

DOS            :DISK OPERATING SYSTEM



DPI             :DOT PER INCH

DSP             :DIGITAL SIGNAL PROCESSOR

DIP             :DUAL INLINE PACKAGE

DRAM        :DYNAMIC RAM

DVD            :DIGITAL VERSATILE DISK

EEPROM    :ELECTRICALLY ERASABLE PROGRAMMABLE READ                        ONLY   MEMORY

EGA            :ENHANCED GRAPHICS ADAPTER

EMM          :EXPENDER MEMORY

FAT             :FILE LOCATION TABLE

HMA           :HIGH MEMORY AREA

PC/AT         :PERSONAL COMPUTER ADVANCE TECHNOLOGY


Thursday, 25 September 2014

Anti virus is a computer programe which is can identify

ANTI- VIRUS::
                         Anti virus is a computer programe which is can  identify the virus and it can take necessary stape for  virus to save the computer, pen drive and other device. The example of anti virus are given bellow………
·        Macfee anti virus
·        Kaspersky anti virus
·        Avg anti virus
·        Avast anti virus
·        Zone alarm anti virus
·        Semantic anti virus
·        Panda anti virus not 32 anti virus
·        Eset anti virus
·        Bit defender anti virus
Generally anti virus destroy any hurmfull virus. There are three classification of anti virus which are use to destroy the virus. The three stape are given bellow……………
v DELETE
v REPAIRE
v QUARANTINE

DELETE::
             Anti virus can destroy a branch of virus or infected the file or folder at a time and same time all virus are deleted by the anti virus. In this case we never can rerstore that file or folder or other data which are deleted by the anti virus.


REPAIRE::
                Infected all file, folder or any data, identify the anti virus and  deleted the virus and in this case, after deleting the virus, anti virus reagain restore all data or file to work. In that time destroy the virus and we can use the infected data.

QUARANTINE::
                   Some time, anti virus can not identify the virus which are unknown.in that case anti virus can not destroy these virus or anti virus understand that the file or folder are infected by the virus but which type of virus can not identify. For that time anti virus collect that folder or file or data and store in the quanantine and that infected file,folder or data we never can use or work in computer and they can not connect with the other data of computer.

  Technique of virus prevention::
                                             To save the computer,we must follow the stape which are given bellow……………….
A.    Firstly install a original anti virus software and examine the computer.
B.     Every day update the data base of anti virus.
C.     Before using the disk(cd/dvd, floppy drive, pendrive, microchip etc),examine that device by anti virus.
D.    Recent downloaded software or .excicutable file,first examine by anti virus then use it.
E.     Any data , when we downloaded,if any  Y/ N pop up menu we can see, in that time click always “N”.
F.     If any special offer we get by the email, before using, deleted the mail.

G.    Examine all the computer which are connected with the LAN.

Pen drive is a external data storage device which

 PEN DRIVE  &  CARDR EADER::
                                  

Pen drive is a external data storage device which is use for carry the data one computer to another computer and cardreader is out put device which is use to connect to the memory or other external data storage device etc.A USB flash drive is a  DATA STORAGE DEVICE that includes FLASH  MEMORY with an integrated Universal Serial Bus (USB) interface.USB flash drives are typically removable and rewritable.USB flash drives are often used for the same purposes for which floppy disk or CDs were used
 

                               


Pendrive and card reader connected to the computer USB slot. Pendrive made metal or plastic.the speed of a pendrive is  500kpps to 1.0mbps.it is use all over the world and it is portable to carry one place to another place.in pendrive there are present read and write head. we connected the pendrive with computer to store the data.

A flash drive presenst of a small printed circuit board  carrying the circuit elements and a USB connector, insulated electrically and protected inside a plastic, metal, or rubberized case which can be carried in a pocket or on a key chain, for example. The USB connector may be protected by a removable cap or by retracting into the body of the drive, although it is not likely to be damaged if unprotected. 

The aim of the project “ PC-INSTALLATION ” is to develop

         
      Objective  OF THE PROJECT



The aim of the project “ PC-INSTALLATION ” is to develop the skills for finding the errors and solving them of a personal computer system.This project also usefull for making  an entrepreneur on computer oriented  areas.

                                                                                                                                                
Hardware & Software REQUIREMENTS


                                                                 hardware required

§     ATX  case with SMPS
§     Dual Core Mother board
§     1 GB RAM
§     250 GB Hard Disk
§     17² LCD / CRT Monitor
§     DVD-RW / CD-RW Drive
§     3.5² Floppy Drive
§     USB mouse and Keyboard
§     Sound Card and Speaker
§     Hp Laser Printer 
 


                                                   SOFTWARE REQUIRED

§     Operating System  :  Windows  XP
§     Anti Virus Program : Avast
§     Application Software : MS Office- 2007


ACCESSORIES USED
            Screw drivers set, Nut & screw, Cotton, Power cord, Cables, paper, Pliers etc.

PC INSTALLATION

Installation  of  a  PC is very simple and it can be done  by following these easy steps:
1)    Configuring the motherboard
2)    Identifying the connectors and cables
3)    Adding memory modules
4)    BIOS set-up
5)    Configuring the IDE card
6)    Final assembly and software installation

1.     Configuring the Motherboard/Jumper Settings

The installation of a PC includes motherboard configuration. It describes the steps to be followed when a new PC is built or a motherboard is upgraded. Recent motherboards come with all features on a single motherboard itself and it is called as “all in motherboard'. Configuring the motherboard is traditionally done using jumpers. They are small pieces of plastics and metal those are used to link/open the riser pins of a jumper strip. Recent motherboards come with software jumpers which can be set through BIOS settings.

All motherboards have some jumper settings for CPU selection, clock speed selection, processor power selection, EPROM type selection, cache RAM selection, etc. The setting should be done carefully referring to the motherboard manual supplied by the manufacturer in compliance with the existing configuration




2.     Identifying the Connectors and Cables

After configuring the motherboard it is necessary to make internal electrical and signal connections between the motherboard and system case. Motherboards and system cases may vary. Look for the matching connectors and cables. Flat ribbon cables are used for data transfer. Power cables to devices are 4 colors wire a twisted cable.
The following are the connectors available in the motherboard:
1.     Keyboard connector
2.     Power supply connector
3.     I/O connectors for parallel port, serial port, floppy port, primary IDE port  
     and secondary IDE port
4.     External battery connector
5.     Infrared device connector (for device such as mouse)
6.     Hard disk LED connector
7.     Turbo switch connector
8.     Reset switch connector
9.     Turbo LED connector
10.      Speaker connector
11.      Key-lock and power LED connector

The locations of all the above connectors and the cables for connecting the devices should be identified thoroughly. If the motherboard is not having the on-board connector for floppy disk drive and hard disk drive, a separate IDE card has to be inserted into one of the free I/O expansion slot.

3. Adding Memory Modules
There are separate connectors available for inserting memory modules in the motherboard. Memory modules are available in different sizes such as 4 MB, 8 MB, 16 MB, 32 MB and 64 MB. Depending upon the memory requirement, memory modules should be inserted into the connectors carefully. There are no jumpers for the memory configuration. The BIOS will test the memory type and size automatically. Improper installation of memory modules will cause the system to shutdown


3.     BIOS-CMOs Setup

BIOS stands for Basic Input Output System. IBM introduced the low power static RAM called CMOS RAM to store the system parameters, date and time. They abandoned the configuration DIP switches that were used in PC/XT. The CMOS RAM is a battery powered 128 bytes memory. There are two types of BIOS set-up programs. One is Text based menu set-up and the other is WinBIOS set-up in which the menu will be in graphics. Generally, it is necessary to set­up the BIOS when a system it is installed. Once the set-up is done and saved, a battery powered CMOS will memorize it. The system will use this configuration every time it is powered-up.
Table shows different categories of BIOS set-up and the various settings available.

Different categories of BIOS set-up

S. NO.        Category               Settings                             
1                  Standard set-up              Date/Time Settings for floppy drive  
                                                              A and floppy   drive B Setting for master                                            
                                                              Hard disk and slave    harddisk.
                                                  
2.                Advanced set-up            Keyboard settings (chars/sec)
Settings for display
Mouse support
System boot-up NUM LOCK
Floppy drive seek at boot
Floppy drive swapping
System boot-up sequence

3.                 Chipset set-up                Cache memory settings

4.                 Power management        Enable/Disable APM (Automatic Power
Management) mode
Sleep mode timeout
Suspend mode timeout
VGA power down
HDD power down

Normally STANDARD SETUP is enough during the initial stages of the installation. All other settings have to be done carefully in consultation with the referring customer support engineer of the supplier.



4.     Configuring the IDE Card

In the BIOS set-up there is a facility for automatically configuring the parameters for the hard disks connected with the IDE card. BIOS set-up will display all possible modes being supported by the hard disk drive. If the drive does not support LBA modes, no LBA option will be shown the number of cylinders is less than or equal to 1024, no LARGE option will be shown. The appropriate mode should be configured depending on the type and size of the hard disk drive.
6. Final Assembly and Software Installation
The following are the points to be verified before completing the hardware installation procedure:
1.     Proper mounting of motherboard in the cabinet.
2.     Proper connection of SMPS cables to the motherboard, floppy drive and
      Hard disk drive.
3.     Proper connection of display card in the I/O slot and display data cable to  
      the monitor.
4.     Proper connection of IDE card in the I/O slot and data cables to FDD and
      HDD.
5.     Proper setting of jumpers and memory modules in the motherboard.
6.     Proper connection of cables to keyboard, keyboard lock, turbo switch,
      speaker, etc.
7.     Proper BIOS set-up.

The hardware installation is over with the verification of above points and the necessary operating system and application soft wares maybe loaded depending upon the user’s requirement.



Software Installation


            Now to get functioning the computer, it will need to install some software. An operating system must come first, and then hardware drivers (so that the operating system can address the assembled hardware) followed by security software and utilities. It may be essential to install some application software games, word processors, databases, programming languages etc. according to need for work.

            Operating System ( Windows XP ) Installation

-: Booting from the CD-ROM :-


1.     Simply start by placing the Windows XP CD- ROM into your CD tray and power on your machine. The first non-blank screen you should see  is  that one shown in the following illustration-




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2.  If the previous screen does not appear, reboot your machine and open up
          the BIOS. You need to make the system boot to the CD-ROM first.  The    
          following screen  is  one of several different BIOSes you could have on your    
          system.  You need to navigate to a screen that allows you to change the Boot   
          Order. This is where it boots off of the CD-ROM.

    3.  Now your system should boot off of the CD- ROM. After a period of time
                  (typically 30-45 seconds), the following  screen appears.  Because we are  
               doing an initial install, you only need to press   Enter  to continue.

4. Enter  at the next screen  to continue installation.

5.     The Microsoft Windows XP Licensing Agr eement appears next, as shown in the 
               following screen.  It is impor tant that you r ead and understand this agreement  
               before continuing with the installation. After you have read and agreed to the 
             contents of the license, press  F8 to continue


Defining Drive Partitions

You now  need to define  the drive partitions. Defining your drive partitions is used instead of FDISK. When defining your  drive par titions,  it is extremely important that you leave enough space for your Linux partition! Following are the steps:


            1.  Press C to create a partition for your Windows installs.

            2.  You need a minimum of 2 GB of space for each of your operating systems.
                     When you are prompted for the size of the partition, enter a number that is
                    equal to  50 percent of your available hard  drive space.  Then, highlight the
                partition, which should be labeled Unpartitioned space (see the following
                   illustration) and  press C


Note:  If partitions already exist they should be deleted.   However you should r ealize  
          that this will permanently remove any data that  is  currently on your system.


Now create your new partition to be at least 2 GB.  In the provided space type
2047 press Enter



You should now see two partitions.  Verify that the new 2047 partition is highlighted and press Enter


    Formatting Drive Partitions

The next step is to format your par tition. For security r easons, you should for mat your partitions using NTFS. NTFS is a Windows partition type that allows you to assign permissions at the folder level. This level of granularity is not the same for FAT
partitions.  NTFS also allows for lager partition sizes compared to the 2 GB limit that
comes with FAT16. The steps for formatting your partition follow:

    1.  Highlight the NTFS <Quick> partition option as shown in the following
         screen,  and press Enter.

2.  After you pr ess Enter,  the system formats the partition, as shown in the
        following screens. Depending on the size of the partition, this step can
      take from 5  minutes  to an hour. 
Since this will take a while you should just wait while this process  continues.


The system has completed the f ormatting process and has automatically
Rebooted and continuing the remaining  installation procedure.


Customizing Your System

Now Windows presents a series of questions, which, when answered, customize your
system. The following steps walk you through the process of customizing your system:

1.  Typically, you only need to make changes during the next step press the Next   
     Button. If you are located outside of the United States, you should change your locale
     settings.



2.   Enter your name and the organization you work for in the Name and Organization   
      fields. Click the Next button when you are done.


3.  In the next screen, enter the Product Key number that came with your software (find 
     it on  your CD) Once  you enter  in the valid key, press the Enter key.




4.  Now enter a name in the Computer name field to name your computer.Then, type 
     in a  password in the Administrator  password field. You also need to confir m the   
    password, as shown in the  following screen. Then, click the Next button.




5.  In the screen that appears, enter the current time, and then fill in the Date
         field and Time Zone field. Click Next button.


6.  After you make the previous configurations, the system installs your networking   
      components. Choose Typical Settings to configure the network settings.If you want  
      to customize your network setting than choose Custom Settings, as shown in the  
      following screen-
Windows completes the networking portion of the installation and moves on to  its final tasks. This step  takes a  long time
7.   If   the following screen will apeare, which means windows Xp has been 
     successfully installed.


8.  Now we have to configure Protection Settings and The list of User Accounts of the  
     computer follwed by the Finish button.


9.  Finally It is time to log in using the Administrator account and the password which 
    enterd earlier during the install.Follwing screen will appear.: