Abstract:
Transmission of data between mainframe and personal
computer plays a very important role in modern data
processtng. In an attempt to establish a data transmission
link from mainframe computer to personal computer the
present work studied the 3270 Information Display System,
its communication protocol specially from the downloading
point of view, the information content of the signal
transmitted from Control Unit and display device and
designed a data acquisition hardware and a software. The
experimental set up developed was used at the Computer
Centre of Bangladesh University of Engineering and
Technology to download data from IBM System/370 to personal
computer. The hardware was designed to work with the 3270
l
Information Display System and since the 3270 System is
attachable to System/370, 30XX and 4300 processors of IBM,
the hardware and software will be able to download data
from all these mainframe computers operating in any
environment to personal computers.
