Appeal No. 96-4169
Application 08/378,066
central data processing unit 10 and an interface 12 inter-
connected by a transmission line 14. The interface 12 is
connected to a printer 16 and a keyboard 18 by means of a
transmission lines 20 and 22, respectively. Electronic data
information exchanged between the central processing unit 10
and the interface 12 through the transmission line 14 is a
standard serial transmitted ASCII data format. The electronic
data information that is transferred from the keyboard 18 to
the interface 12 and from the interface 12 to printer 16
through the data transmission lines 22 and 20, respectively,
are in parallel.
Galbraith teaches in column 2, lines 55-58, that Figure 2
shows
the architecture of the data terminal of the invention and
indicates the flow of data and control signals between the
various components which are represented schematically. In
column 3, lines 9-21, Galbraith teaches that interface 12
shown in Figure 2 is capable of operating in a local mode and
an on-line mode. Control means 42 acts as a switch to
10
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Last modified: November 3, 2007