Because of its online orientation and low cost, the minicomputer
can also do transaction processing, but on a smaller scale than the IBM mainframes.
Online service providers currently offer Internet access as a kind of "stepbrother" that sits on top of their proprietary offerings, said Burnham, in the same way that minicomputer
vendors were forced to offer UNIX.
If the majority of the minicomputer
programs had been well structured with real databases, we would have seen much less erosion of their installed base over the past few years.
A LAN already linked several other SPI departments, so Aines converted to a LAN-based accounting program at one third the cost of installing new minicomputer
The lack of network-management functions on the minicomputers minicomputers
prevented our Network Operations staff from defining the true nature of their data traffic.
Overhead crane users report 19% controlled by PlCs, 2% controlled by microcomputers, 4% controlled by minicomputers
, and 75% with no computer control.
A firm was coded as surviving if it remained an independent producer of minicomputers
from birth through the end of the study.
Dumb terminals can be purchased for considerably less than personal computers, and they can be linked to the minicomputer
by telephone wire, which is cheaper than cable, McCalmont noted.
The following real-life case illustrates an example of how one firm moved from a single user microcomputer to a multi-user minicomputer
and avoided both reprogramming and performing parallel testing for a lengthy period.
On the data-communications side, AMI used point-to-point communications lines between its minicomputers