আজকে আমরা আলোচনা করবো কম্পিউটারের অন্যতম Input Device- Keyboard সম্পর্কে “ALL ABOUT KEYBOARD” আলোচনার মধ্য দিয়ে। 

শিক্ষালয় ওয়েবসাইটের পক্ষ থেকে শিক্ষার্থীদের জন্য কম্পিউটার সম্পর্কিত বিবিধ নোট নিয়মিত শিক্ষালয় ওয়েবসাইটে প্রদান করা হয়। শিক্ষার্থীরা এই আলোচনাগুলি থেকে কম্পিউটার সম্পর্কে সাধারণ ধারণা লাভ করতে সক্ষম হবে। 

শিক্ষালয় ওয়েবসাইটের সকল প্রকার আপডেট লাভ করতে মোবাইল স্ক্রিনের বা’দিকের নিম্নের অংশে থাকা বেল আইকনটিতে (🔔) টাচ করে শিক্ষালয় ওয়েবসাইটের নোটিফিকেশন অন করে রাখুন। 



             Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions.


      Keyboard Keys:

              Most keyboard layouts are still a variations of the layout of a typewriter, at least for the alphabetic, numerical and special character keys. There are mostly 101 keys on the keyboard.


       Alpha Keys:

              Alphabet keys are marked from a to z. You can use shift key to make them capital. Similar results can be obtained by putting CAPS LOCK key on.


       Numeric Keys:

              The numeric keys (with the characters 0 to 9) are located on the computer’s keyboard at two places. You can see them in the top row above the alpha keys. A second set of these keys is provided on the right-hand side of the keyboard. The numeric keys in the top row can be used straightaway to type in numeric characters. By simultaneously holding down the shift key you can also type in special upper characters like ! % etc. However, to type numeric characters by using the keys on the right side, you will need to press the NUM LOCK key on.


       Function Key:

              These keys are marked F1 to F12. These keys are used for specific purposes as defined in the computer which you may be using.


সাধারণ জ্ঞান থেকে অনলাইন MCQ প্রশ্নের কুইজ প্রদান করতে এই লেখাতে ক্লিক/টাচ করতে হবে 


       Arrow Keys:

              On 101 keys keyboard these are placed at two places. The first is called the cursor pad which works independently. The other is the numeric-cum-cursor pad. When the NUM LOCK key is not in the ON position, pressing the key of the numeric keypad moves the cursor in the direction shown on each key. Otherwise, this portion is used to enter number.


       Special Keys:

              There are several other keys which serve definite purposes. The special keys are:


       Shift Key:

              It is used for typing capital letters and special characters. In combination with both Control and Alter keys, it is sometimes used to execute a particular command too.


       Control Key:

              On its own, this key does not have any purpose. However, combined with different keys, it performs some useful operations.



              It allows the cursor to go back by one character. Some types of Computer programs allow the backspace to delete the last character. A cursor is usually a blinking line on the screen, which shows where the character you type on your keyboard will appear.



              As in the typewriter, the spacebar is used to leave space between words.


       Enter Key:

              It informs the Computer that the line of the matter, you are typing, has come to an end. After that you begin typing from a new line. It is also used, while programming to tell the Computer to execute certain commands which you give.


Del Key:

              If, by mistake, you have typed in something which you did not want to, you can erase the wrong character by pressing the DEL (Short for Delete) key.


       Num Lock:

              As mentioned you need to put this ON for typing the numeric data. When you put on the Computer System, this key is put ON.


       Arithmetic Operators:

              The number pad includes keys for the four standard arithmetic operators / (Divide), * (Multiply),

  • (Subtract) and + (Addition).



       The Escape key is typically enabled as an exit key by most software applications. It is used to cancel out of a command or to exit an application. It is also used in combination with other keys to create special key values and to include other actions.


Print Screen/SysRq:

       On a windows system, the image of monitor’s display is sent to the windows clipboard.



       In its default mode (PAUSE), this key will, if enabled by software, pause the display or the action of an application program.


শিক্ষালয় ওয়েবসাইটে প্রকাশিত কম্পিউটার সম্পর্কিত অন্যান্য গুরুত্বপুর্ণ আলোচনাগুলি দেখতে এই লেখাতে ক্লিক/টাচ করতে হবে 

শিক্ষালয় ওয়েবসাইটের কিছু গুরুত্বপূর্ণ লিঙ্ক নিম্নে প্রদান করা হলোঃ 

শিক্ষালয়ের সাথে ফেসবুকে যুক্ত হতে নিম্নের ছবিতে ক্লিক/টাচ করতে হবেঃ sikkhalaya

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