[计] dedicated uniprogrammed operating system

zhuān yòng dān dào chéng xù de cāo zuō xì tǒng ㄓㄨㄢ ㄩㄥˋ ㄉㄢ ㄉㄠˋ ㄔㄥˊ ㄒㄩˋ ㄉㄜ˙ ㄘㄠ ㄗㄨㄛ ㄒㄧˋ ㄊㄨㄥˇ