7. One or more computer memories contained in a portable scanning device, the memories collectively containing a data structure, the data structure containing both (1) data derived from images of text captured by the scanning device and (2) data created by an application on a computing device and transferred to the scanning device via a universal serial bus port, the data derived from images of text captured by the scanning device comprising (1) an image of text captured by the scanning device in a first capture operation, and (2) a textual representation of text captured by the scanning device in a second capture operation, the textual representation having been obtained by converting an image of text captured by the scanning device in the second capture operation.
7. One or more computer memories contained in a portable scanning device, the memories collectively containing a data structure, the data structure containing both (1) data derived from images of text captured by the scanning device and (2) data created by an application on a computing device and transferred to the scanning device via a universal serial bus port, the data derived from images of text captured by the scanning device comprising (1) an image of text captured by the scanning device in a first capture operation, and (2) a textual representation of text captured by the scanning device in a second capture operation, the textual representation having been obtained by converting an image of text captured by the scanning device in the second capture operation. 10. The computer memories of claim 7 , wherein the data derived from the image of text captured by the scanning device include both textual data and compressed image data.