目录辅助操作员
directory assistance operator
目标为基的虚拟操作系统
object based virtual operating system
摩托罗拉磁盘操作系统
Motorola disc operating system
MDOS
摩斯电码自动操作
automatic Morse code operation
摩托罗拉自动顺序计算器操作测试
Motorola automatic sequential computer operated test
Mascot