You can scan and save a document in a variety of file formats, such as .jpg, .gif, .psd, .pdf. etc. However, by scanning it and saving it alone you will merely obtain an image file, not a text file. If you want to be able to treat your scanned document as text and edit it, you will first need to use the Microsoft Imaging Tool in Microsoft Office in order to convert it to an editable Word document.
Save the scanned file as a .tiff file. Do this by opening the scanned document in an application such as Photoshop, Illustrator, Microsoft Paint or another. Just open your document and re-save it, choosing the .tiff format from the drop-down menu in the saving prompt.
Install 'Microsoft Imaging Tool' through the following action. Go to the Control Panel in your Start menu, click 'Add/Remove Features' and select 'Microsoft Office.' Click on 'Change' and then Add/Remove Features.' From here, expand 'Office Tools' and select 'Microsoft Imaging Tool.'
In the Start menu, go to 'All Programs' and then proceed via 'Microsoft Office' to 'Microsoft Office Document Imaging.'
Open the saved .tiff doc inside 'Microsoft Office Document Imaging' and select the document by pressing Ctrl + A. The red line around the document will indicate that it is selected.
Right-click the document and select 'Send to Word' in the drop down menu that appears. This will open a new editable Word document of your scan.