Issue No.07 - July (1971 vol.20)
The two broad aspects of microprogramming that are addressed in this issue are:microprogramming as a technological tool used to define and establish system control, and the application of microprogramming in the effective realization of computer systems.
Dynamic microprogramming, function extenisions in memory, hierarchy of routines, microprogramming applications, residual control.
M.J. Flynn, "Microprogramming: An Introduction and a Viewpoint", IEEE Transactions on Computers, vol.20, no. 7, pp. 727-731, July 1971, doi:10.1109/T-C.1971.223341