0 How to convert an image from color to black and white (grayscale)? 0
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How to scan using IrfanView?
0 From the File menu chose Select Scan / TWAIN Source and set the scanner you want to use. From
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0 Open the image. From the Image menu chose Resize/Resample. 0
Continue readingHow to navigate to the next / previous image in IrfanView?
0 Press the Right key to go to the next picture. Press the Left key to go to the previous
Continue readingHow to toggle full screen in IrfanView?
0 Press the Enter key to go full screen. Press the Enter key to exit full screen. 0
Continue readingWhat number is missing? : challenge 1 : 4 numbers : 1 number every 2 seconds
0 Here are 4 numbers: 5 3 8 2. You’ll see 3 of them in the next seconds. Can you
Continue readingLearn Math (problems with solutions) [volume 2]
0 This ebook contains the solutions and is available for free when you join the free newsletter. Samples: Problem 1
How to create a new file in Linux (CentOS 7)
0 To create a new file in Linux (CentOS 7), type touch filename then press Enter.. filename is the name
Continue readingHow to change the directory in Linux (CentOS 7)
0 To change the directory in Linux (CentOS 7), type cd target_folder then press Enter.. Target_folder is the name of
Continue readingHow to clear the screen in Linux (CentOS 7)
0 To clear the screen in Linux (CentOS 7), type clear and press Enter. The clear command will clear whatever
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