Abstract: A download program causes a computer to function as: a user identification information section that acquires a user identification (ID) information; a download section that downloads a download file including a compressed target program determined based on the acquired user ID information from the server through the network, and stores the download file in a predetermined download file storage area; an extraction section that extracts the compressed target program included in the download file stored in the predetermined download file storage area by the download; and an installation program execution section that executes an installation program for installing the extracted target program in the computer.

Abstract: A system for counting a key-in operation has a keyboard, input key judging unit for judging an input key keyed-in by the keyboard to be an effective key, an ineffective key or a command key, input key counting unit for counting the number of inputs of each input key, count result storing unit for storing the number of inputs of each input key, count result detecting unit for detecting the number of inputs of each input key, character display control unit for generating a prescribed character according to a count result of each input key which is employed in displaying the count result, display for displaying the prescribed character generated by character display control unit, and mouse for controlling a movement of a pointer on a screen and for inputting a click signal.

Abstract: A USB cable according to the present invention has a USB connector connected with a USB port of a PC (Personal Computer), a phone connector connected with a connector of an external connector such as a mobile phone, a control unit, which is situated between the USB connector and the phone connector, for charging a battery of the mobile phone by using power supplied from the USB port of the PC and for transmitting and receiving data with the PC and the mobile phone, and a cable for connecting the USB connector and the phone connector with the control unit respectively.