The Commodore Plus/4 is a personal computer (PC) released by Commodore Business Machines in 1984. Its original name was 264. The machine was successful in Central Europe, especially in Hungary, somewhat successful in Western Europe, and the total failure of the United States. The “school computer” program in the mid 80 contributed significantly to the Hungarian success, as it provided governmental funds to to supply primary and secondary schools with computers. In this program, more than 10,000 Commodore 16 and Commodore Plus/4 were purchased and in most of the schools, the computer science education started with the help of these machines.