High Quality Content by WIKIPEDIA articles! Microprofessor I (MPF 1), introduced in 1981 by Multitech, who changed their company name to Acer in 1987, was their first branded computer product and probably one of the world's longest selling computers. The MPF I, specifically designed to teach the fundamentals of machine code, is a simple and easy to use training system for the Zilog Z80 microprocessor. The MPF 1 does not look like a computer. It is enclosed in a vacuum formed plastic book case usually used to store a copy of language textbook and two audio cassettes as well as a training manual. When closed, the MPF 1 can be placed on a bookshelf for easy storage and looks just like a book.