A cellular telephone set can simplify operation when a picture (picture memorandum) picked-up as memorandum is registered in a memory and reproduced. Upon initial registration of an image to a memory for the picture memorandum, a picture memorandum icon is generated and displayed by a CPU. In subsequent registration of images, a user is not required for a particular operation. Upon reading out the registered images, the first registered image is displayed on the waiting screen image by selecting the picture memorandum icon on the display portion. If the user wants to see a necessary image other than the display image, the registered images are displayed on the waiting screen image sequentially by operating the cursor key. Therefore, the desired image can be easily extracted.