The MSX was Microsoft's failed attempt at creating a global, standard home computer format (they were inspired by the success of VHS video). However, the machine was successful in certain parts of the globe, particularly in parts of Asia (particularly Japan), South America, the former Soviet Union and several European countries.
There were MSX owners here in the UK, and there were enough for some computer magazines to feature BASIC program listings for the owners to type into their machines. However, like the Atari 8-bits it would never gain the mega popularity of the C64 and ZX Spectrum.
MSX is an abbreviation of MicroSoft eXtended Basic which was built into the machine. It was easy to program and versatile and perfect for educational software - I believe some schools even had an MSX in the classroom.
Many models were built in Japan, but they were also manufactured in Korea by GoldStar, Philips in the Netherlands and Spectravideo in the United States. The latter had previously produced the Quickshot joystick and gaming cartridges.
A Spectravideo SV-328 home computer - public domain photo
In 1984 the replacement SVI-728 (which looked similar to the SV-328) was the first fully MSX compatible computer by the company. Creative Commons image by Ivor Clukas
Original MSX spec:
Zilog Z80A processor running at 3.56mhz , 16kb BIOS, 64kb RAM, 32kb ROM, Maximum 256x192 pixel display, 16 colors, 32 sprites, Text modes: 40×24 and 32×24, Video RAM 16kb, General Instrument AY-3-8910 soundchip. MSX Basic v1.0.
Games for the machine came on cassette and cartridge, with Konami and Hudson Soft in Japan being major publishers. Many MSX2 computers came with a built-in 3.5" floppy disk drive, which meant games started to become more popular on disk in the latter half of the 80s.
Many video games were ported from the ZX Spectrum to the MSX. The Spectrum featured the same CPU and soundchip and the graphics could be emulated in Screen-2 mode.
Sony MSX HitBit-10-P / HB-10P - public domain image
Canon V-20 MSX
TALENT TPC-310 MSX2 computer, made in Argentina by Telematica (1988)