dc.4

UNIX v6源代码 这几乎是最经典的unix版本 unix操作系统设计和莱昂氏unix源代码分析都是用的该版

.th DC IV 5/27/74
.sh NAME
dc \*- DC-11 communications interface
.sh DESCRIPTION
The discussion of typewriter I/O given in
tty (IV) applies to these devices.
.s3
The DC-11 typewriter interface operates at any of four speeds,
independently settable for input and output.
The speed is selected by the same encoding used by the DH (IV)
device (enumerated in stty (II));
impossible speed changes are ignored.
.sh FILES
/dev/tty[01234567abcd]   113B Dataphones
(not currently connected\*- see dh (IV))
.sh "SEE ALSO"
tty (IV), stty (II), dh (IV)
.sh BUGS