MSX is a standardized 
home computer architecture, announced by 
Microsoft and 
ASCII on June 16, 1983.
[1][2] It was initially conceived by Microsoft as a product for the Eastern sector, and jointly marketed by 
Kazuhiko Nishi, then vice-president at Microsoft and director at ASCII Corporation.
[3] Microsoft and Nishi conceived the project as an attempt to create unified standards among various home computing system manufacturers of the period, in the same fashion as the 
VHS standard for home 
video tape machines.
[4][5]
MSX systems were popular in 
Japan and several other countries. 
Sony was the primary manufacturer of MSX systems at the time of release, and throughout most of the products lifespan, producing more units than any other manufacturer. Eventually 5 million MSX-based units were sold in Japan alone. Despite Microsoft's involvement, few MSX-based machines were released in the United States.