The Sord M243 was one of the first Japanese made computers. Sord Computer Systems, Inc. was started in 1970 and manufactured 8-bit computers for home use. The M243 model was comprised of Mark II, Mark III Mark IV and Mark V versions starting around 1981. Sord was mainly known for their M5 model computer. The M243 pictured here is a Mark IV. The keyboard is model 243S.