Issue No.08 - August (1975 vol.8)
E.G. Mallach , Honeywell Information Systems Inc.
Upgrading to a newer data processing system is not simply a matter of removing the old equipment and plugging in the new. The older system's workload must be transferred to the newer one/p=n-/and the newer one is usually also a fundamentally different one. The effort involved in such a conversion is massive. The difficulties of obtaining a smooth transition from one machine to the next are immense.
E.G. Mallach, "Emulator Architecture", Computer, vol.8, no. 8, pp. 24-32, August 1975, doi:10.1109/C-M.1975.219049