where is calculator for computer 

The calculator
1. Click on the start button.
2. Move the mouse pointer to programs and then from the sub-menu select accessories.
3. Click on calculator

To see what a key does in the calculator
Right click on a button within the calculator and a what’s this button is displayed. Click on this button and the function of the button explained.

To switch to scientific mode
Click on the view drop menu, and click on the scientific option.

What is the operating systems

Computer software, or just software, is a collection of computer programs and related data that provide the instructions telling a computer what to do and how to do it

Types of Software:-

1). Application software, also known as an application, is computer software designed to help the user to perform singular or multiple related specific tasks. It helps to solve problems in the real world. Examples include enterprise software, accounting software, office suites, graphics software, and media players.
2). System software is computer software designed to operate the computer hardware and to provide a platform for running application software.
 The most basic types of system software are:
The computer BIOS and device firmware, which provide basic functionality to operate and control the hardware connected to or built into the computer.
The operating system (prominent examples being Microsoft Windows, Mac OS X and Linux), which allows the parts of a computer to work together by performing tasks like transferring data between memory and disks or rendering output onto a display device. It also provides a platform to run high-level system software and application software.
Utility software, which helps to analyze, configure, optimize and maintain the computer.
Compiler
A Compiler is a program that translates code of a programming language in machine code compiler compiles (or changes your coding into machine language) at one go and at the end give you the list of errors on each and every line but the interpreter processes or converts the coding line...
Interpreter
Interpreters translate code one line at time, executing each line as it is "translated,
An interpreter reads the source code one instruction or line at a time, converts this line into machine code and executes it. The machine code is then discarded and the next line is read.

OPERATING SYSTEM

The operating system is responsible for creating the link between the material resources, the user and the applications (word processor, video game, etc.). The job of Operating Systems for a computer is mainly to manage the hardware and software resources of the system.Some examples which would be easy to recall are Microsoft Windows (98, 2000, Vista, etc.), UNIX, Macintosh
.

Common Tasks and standards of Operating Systems - Following are the common tasks:

1. Operating Systems Processor Management: This involves ensuring that all the system resources receive sufficient processes time for functioning.
2. Operating Systems-Memory Management or Storage Management-. It is the job of an Operating System to allocate the relevant and necessary memory space to the applications & devices for efficient and optimum processing of information.
3. Operating Systems-Device Management: Managing the inputs and outputs of various devices / peripherals is also one of the critical functions of Operating Systems.
4. Operating Systems-Application Management: As the OS manages the devices using drivers, it also manages the various applications running on a computer using different
5. Operating Systems-User Interface: The OS acts as an engine to provide means of interaction between user and computer through the user interfaces.
6. File management: the operating system manages reading and writing in the file system and the user and application file access authorizations.
Components of the operating system
The operating system comprises a set of software packages that can be used to manage interactions with the hardware. The following elements are generally included in this set of software:
The kernel, which represents the operating system's basic functions such as management of memory, processes, files, main inputs/outputs and communication functionalities.
The shell, -allowing communication with the operating system via a control language, letting the user control the peripherals without knowing the characteristics of the hardware used, management of physical addresses, etc.
The file system, allowing files to be recorded in a tree structure.

Types of Operating Systems - Following are the types of an Operating Systems:

1. Operating Systems for Real-time OS: These types of OS are used to control machinery, control systems and industrial systems and have very less or in certain case no user-interface capability.
2. Operating Systems for Single User, Single Task OS: This is a typical computer system where one user can work effectively only on one task. Cell phones and palm tops are examples where these types of systems are used.
3. Operating Systems for Single User, Multi-tasking: Computer Operating Systems of desktops or laptops typically fall within this category. Here, the user can use several applications at a time.
4. Operating Systems for Multi-User: Here, various users use the computer system through different terminal and the Operating Systems on that computer has to balance multiple users with multiple applications.

Temp file kaise hataye y Delete kre?

Computer से temp file कैसे delete करे?
कंप्यूटर से temp फाइल को हटाने के लिए  start पर क्लिक करे और run पर जाये या शॉर्टकट  windows + R दबाकर Run मे जाये और %temp% लिख के ok पर क्लिक करे।

अब एक new windows खुलेगी उसमे सारी temp फाइल होती है जो कंप्यूटर के लिए किसी काम की नही होती सभी को control + A दबाकर सलेक्ट करे और delete य sift + delete दबा दे।। अब आपके कंप्यूटर से सारी temp फाइल हट गई है।।

taskbar शॉर्टकट को कैसे हटाये।

1.mause को taskbar पर लेजाकर right क्लिक करे।
2.toolbars पर जाये
3.toolbars से local disk D पर जाकर क्लिक करे ।
आपका शॉर्टकट हट जायेगा।।

Taskbar par shoutcart kaise bnaye?

Taskbar पर शॉर्टकट कैसे बनाये
1.सबसे पहले taskbar पर maus लेकर जाये ओर right क्लिक करे
2.उसके बाद toolbars मे जाये
3.toolbars के बाद new toolbar पर क्लिक करे
4.फिर एक पेज खुलेगा उसमे से जिसे आप taskbar पर लगाना चाहते है sllect करे।
उदाहरण के लिए आप देख सकते है मैंने my computer क्लिक किया ,किलिक करते ही  drive C,D,E,F  आ गया अब मैंने drive D पर क्लिक किया , drive D पर क्लिक करते ही drive के अंदर जितने file य folder ह सब आ गया। अच हम उसमे से भी कोई फोल्डर पर क्लिक कर सकते ह ।लेकिन में drive D का ही शॉर्टकट  बबन चाहता हु ।। इसलtaskarिए अब हम ok वाले बटन पर क्लिक कर देंगे।
लीजिये बं गया drive D का शॉर्टकट ।।

Shutdouwn batch file kaise banaye? 

sabse pahle aap notepad ko Khole uske baad ye step by step follow kre....

cfate batch file

open notepad cdiror
shutdown=shutdown -s -t (10)
restart=shutdown -r -t (5)
logoff=shutdown -l -t (10)
save file name.bet

Windose xp me Desktop  par  Shortcut  ka icon kaise bnaye???

दोस्तो आज जो मैं Trick आपको बताने जा रहा हूँ उससे आप लोग असनि से
अपने Desktop पर एक shortcut का Icon बना सकते हैं. तो चलिए जानते हैं:-  ये कैसे होगा. 

सबसे पहले आप अपने Desktop पर Right Click करे...
और नेव वाले ओपशन पर जाये.. एक दुसरा तैब खुलेगा अप उसमे Shortcut वाले Option को चुने....
फिर ब्राउज़र पर क्लिक करे।
अब जिसका shortcut बनाना है उस पर क्लिक कीजिये।
और Next पर क्लिक करे...
अब आप आइकोन का नाम बदलना चाह्ते है तो बदल लिजिए नही बदलना है तो आप finish पर क्लिक किजिए..
आब आप आपने Desktop पर आ जैये अपका आइकोन बन गया है...

नो अगर आइकोन का इमेज बदलना  चहते है.....
उस Icon पर Right Click करे और उसकी Property
में जाए
वहाँ आप निचे देखे और  Change आइकॉन पर को क्लिक करे
अब आप अपने मन के मुताबिक Icon चुने और उसके बाद ओके पर क्लिक करे।
आपका Icon अब तैयार हैं

Windose xp me  Shortcut shortcut ka icon kaise bnaye???

Dosto aaj main apko ek nya trick btane ja rha hu iska upyog krke ap anpe desktop pr ek shourtcut ka icon bna skte h.
Apne desktop pr right clik kare..
Ap ap New waale option par jaye…
Next  dusre waale tabe pr shortcut ka option dikhai de rha hoga…
Next Ap ap shortcut waale option ko chune
Next broser waale option pr clik kre..
Next ab jiska shortcut banan h use select kre..
Or ok clik kre
Ab next par clik kre.
File name badlna h to badl lijiye nhi bdlna h to finish pr klik kre..
Ab aap desktop par aa jaye appka icon ban chukka h..

Impotent
  agr ap icon ko  badlana chahte h..
Icon par right clik kre or properties par jaaye..
Niche change icon par clik karee..
Next man mutabit icon chune..
Ok par clik kre…
Apka apne pasnd ka icon taiyar h…

How to the enable right click?

1).run-gpedit.msc
2).user configuration
3).administrative templates
4).windows components
5).remove windows explorer's default content menu
6).disable –ok -apply

How to remove blue icon?

Right Click to my computer
Go to properties and automatic new windows open
New windows in click advanced and go to performance
Next click to settings
Next click to visual effects
Next click to custom
Next go to “use drop shadows for icon labels on the desktop” click on right chin
Next ok
Last restart computer…..