During the early 1970s, the typical system consisted of a 16-bit minicomputer
with 8 kilobytes to 16 kB of main memory (a kilobyte represents [2.sup.10] bytes of information), a disk system that held 2.5 megabytes to 10 MB of data (a megabyte represents [2.sup.20] bytes), and a custom designed interface using an 11-inch storage tube display.
As discussed above, frequently microcomputers and often minicomputers
do not utilize effective controls.
are still expensive to buy and operate.
Largely out of the market for minicomputers
like those that ran its early newspaper news and classified front-end systems, Digital in recent years concentrated on developing high-end workstations and servers powered by its own very high-speed Alpha processors and running under Microsoft Windows NT.
There is no established network standard for minicomputers
comparable to SNA for mainframes.
BRAD: Many of the larger wholesalers are using minicomputers
. I think some of that is inertia - they've always used a mini, so they're still on it.
Consequently, there is a trend among small and medium-sized cities to migrate upward to minicomputers
where the power, software, and reliability are available (Kraemer and Norris, 1994).
is the other vendor with software for both microcomputers and minicomputers
. The microcomputer product is a DOS-compatible software package, Micro-VTLS.
Third, many local governments, especially the larger ones, have multiple platforms: for example, a mainframe, minicomputers
, and PCs.
"This whole complex system is run by many outdated minicomputers
," says Martin Gareau, manager of volumetric data measurement systems at EOG's Cleveland headquarters.
That reliability has led most large companies that are downsizing to smaller systems to move data from their mainframes and minicomputers
onto Novell file servers.
Lease fees for minicomputers
, which are more complex and costly machines, are calculated separately each year, with the following considerations.