A Basic hand-coded Calculator created using Notepad

A Basic hand-coded Calculator created using Notepad

Posted by Kiran.BL on Thursday, December 21, 2017 in Microsoft, Windows,

Making calculations using Windows calculator can get tedious. 

In this article, I'll tell you how to create your's personal calculator in a few seconds. 

Today let us try building our own command prompt calculator.

The following steps help you in building a simple calculator.

Step 1:

Press Windows logo + R on the keyboard, it will launch the Run window.

Type Notepad and press enter.

Step 2: 

 Copy the following code and paste it into the notepad.

@echo off

title Basic Calculator by Kiran

color 3f

:top

echo --------------------------------------------------------------

echo Welcome to Basic Calculator  

echo --------------------------------------------------------------

echo. 

set /p sum=

set /a ans=%sum%

echo. 

echo = %ans%

echo --------------------------------------------------------------

pause

cls

echo Previous Answer: %ans%

goto top

pause

exit

Note:

1. Use the format (without quotes as in the above code) title xxx in the above code have your own title. 

2. change the background and the font colour of the calculator

considering  2 hex digits — the first corresponds the background; the second the foreground. Each digit will follow the following values:

0 = Black, 1 = Blue, 2 = Green, 3 = Aqua, 4 = Red, 5 = Purple, 6 = Yellow, 7 = White, 8 = Gray, 9 = Light Blue

 A = Light Green, B = Light Aqua, C = Light Red, D = Light Purple, E = Light Yellow, F = Bright White

Ex: In the code, we have used 3f. This means, the background colour will be Aqua and the font colour will be Bright white.

Like the above example, you can have your own colour combinations. The format is colour XX. 

                 -> XX represents the colour combinations.

Step 3: 

Now Save Notepad in  .bat format

Note: 

1. It can only handle integers and those of a specific number of digits. It doesn’t handle complex equations.

2. What is .bat?

.bat is an extension of batch files. A batch file is a text file that contains many commands for a computer’s operating system.

Step 4: 

Double-click on a file you have created. 

A command line based calculator will appear on the screen. 

Step 5:

To calculate, type the number and press enter. You will see the answer.

Step 6:

Press any key to clear the previous calculation. Continue calculating with a different set of numbers. It will then display the answer of the previous calculation at the starting of the screen.

Conclusion: 

Like this, you can create your own calculator and use this in your Day-to-day life.

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How To Lock A Folder Using Notepad

How To Lock A Folder Using Notepad

Posted by Kiran.BL on Wednesday, December 20, 2017 in Microsoft, Windows,

There are many file locker applications available over the internet. We need to pay for some of the applications available. Here in this article, I will explain you about how to lock a file Microsoft way. This procedure is a bit difficult. But, secure than any other file locker software as this method is from Microsoft.

The following steps will guide you on how to lock a folder using notepad.

Step 1:
Press Windows logo + R on your keyboard, it will launch the Run window.
Type Notepad and press enter.

Step 2:

Now Copy the following code and paste it into notepad

cls
@ECHO OFF
title Folder Locker
if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST Locker goto MDLOCKER
:CONFIRM
echo Are you sure u want to Lock the folder(Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM
:LOCK
ren Locker "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End
:UNLOCK
echo Enter password to Unlock folder
set/p "pass=>"
if NOT %pass%==type your password here  goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" Locker
echo Folder Unlocked successfully
goto End
:FAIL
echo Invalid password
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End
:End

Make sure that you will replace type your password here with your own password in the code.
Now Save Notepad as FolderLock.bat in the desired location.

Step 3:

Now double click on FolderLock.bat file then a new folder named as Locker is created.

Step 4:

Save your files in Locker folder

Step 5:

Again, double-click on the FolderLock.bat, a Command prompt window pops up.

Step 6:

To lock the folder(Locker) press "y " in the prompt to lock and hide the folder.

If you want to unlock the folder to access that folder; please double click on FolderLock.bat. You will be asked to enter the password.

Please enter the password and press enter.
The Locker folder gets unlocked and you can access the files that you were in need of.

Conclusion:

Using the above steps, you can lock the folder and unlock it using Notepad.


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Add application shortcuts to the Windows Desktop Right-Click Menu

Add application shortcuts to the Windows Desktop Right-Click Menu

Posted by Kiran.BL on Tuesday, December 19, 2017 in Microsoft, Windows,

We use a lot of applications in day to day life. Some of them are most important and we use those applications very often. We pile up shortcuts of often used applications on the desktop and use them. What if we have those applications listed in the desktop right-click menu. Simple registry changes will help you list of the often used applications in the right-click menu. This technique should work in Windows 7, 8, 10, or Vista.

The following are the steps that will help you launch those applications in the easiest possible way.

We’ll show you how to add Notepad to the menu, but you could add any applications you want instead.

Step 1: OPEN REGEDIT

Press Windows logo + R on your keyboard, It will launch the Run window.

Type REGEDIT and press Enter.

You will get a window like in the below picture

STEP 2: Backing up Registry (Important step)

I would recommend you to take a backup of the registry as a precautionary measure.

To take a back up please click on FILE menu and select EXPORT.

You will get a window to called EXPORT REGISTRY FILE, the name of the backup file should be in the format Backup DD.MM.YY.

Select the location where you wish to save and click on SAVE

STEP 3: Navigating to the Shell Folder

Once the backup file is saved, browse down to the following key:

HKEY_CLASSES_ROOT\Directory\Background\shell

STEP 4: Creating an entry under the shell folder

You’ll want to create a new key underneath the shell key, the name of which is exactly what is going to show up on the desktop menu. Right-click on the “shell” key, and then choose New \ Key from the menu.

Give the new key the name that you want to show up on the desktop context menu. For this example, we’ll be using Notepad.

Next, you’ll need to create the command key that will actually hold the command used to launch the application. Right-click on the new Notepad key, and then choose New \ Key from the menu.

Give this key the name “command” in lowercase.

To complete this step you’ll need the full path to the application that you want to launch. You can use Shift + Right-Click to get the Copy as Path menu item to find this more quickly.

Now click on “command” in reg edit that you have created on the left side, and then double-click on the (Default) key on the right side to edit the string value

Paste in the full path to the executable that you got from the “Copy as Path” step above, or you can put in the full path yourself if you’d like.

Once you have clicked OK, it should look like this:

Now that you have set-up, Go to desktop and right-click on the desktop. In the context menu click on a notepad. you will see the application opened.

You can add as many applications to the desktop context menu as you’d like, just repeat the steps again with a new menu item name.

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