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From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
Page Mode Dynamic Random Access Memory
Page Mode DRAM
A technique used to support faster
sequential access to DRAM by allowing any number of accesses
to the currently open row to be made after supplying the {row
address} just once.
The RAS signal is kept active, and with each falling edge
of the CAS\ signal a new column address can be supplied
and the corresponding bits can be accessed. This is faster
than a full RAS-CAS cycle because only the shorter Column
Access Time needs to be obeyed.
Note that strictly speaking such a DRAM is not a true {random
access memory} since accesses to the open row are faster than
to other locations.
EDO RAM is replacing Page Mode DRAM in many new
microcomputers.
[Is "Fast Page Mode" the same as "Page Mode"?]
(1996-10-06)