Abstract: The present invention is to provide a real time learning system established between at least one teacher's computer and at least one learner's computer over the Internet. Each of the teacher's and learner's computer has a video platform of real time learning coupled to a server of real time learning-over the Internet, and enables each teacher or learner to send personal data to the server capable of classifying and mating qualified teachers with qualified learners over the Internet and carrying out an interactive teaching between the teacher's and the learner's computers.

Abstract: A system and method for performing electronic trading through serial numbers of merchandise is disclosed. The system includes at least a merchandise supplier end and a customer end. The merchandise supplier end prepares a merchandise database with merchandise and correspondent serial numbers. The customer end can order the merchandise by just inputting the serial number through an electronic device. Then, the device helps the customer end finishing the order to the supplier by just a keying of the customer end so as to prevent from conventional complicated process.

Abstract: A system and method for executing composite commands with consecutive single keystrokes to be applied to executable computer system platforms. By utilizing a string of digits entered by the user, the system searches a built-in digit-to-program index database for the target application program or function item associated with this string of digits, and then executes the program or function item.