Fifty Years Ago .... from the pages of Computer Weekly

8th August 1974 computing, compiled by TNMOC volunteer archivist, Brian Aldous.

A selection of stories from Computer Weekly from 8th August 1974. The full archive of Computer Weekly can be seen at TNMOC, where there are special rolling displays of front pages from 25 and 40 years ago.

Air traffic control data handling improved: An attractive alternative to the use of large-scale central computers for data handling and display systems in air traffic control, air defence and other communication and control systems, has been introduced by Marconi Radar Systems, a GEC subsidiary. Called Locus 16, the system makes extensive use of distributed processing in a way which makes even a conventional minicomputer seem inflexible. As a result, designers are able to build into each control point of a network all the data processing and storage required to meet the needs at that particular point, and have the freedom to design each control point separately on a one-off basis where requirements vary from one control point to another. There are several benefits to be derived from such an approach. The redundancy which needs to be built into such a system can be limited to one or two Locus 16 units, whereas in a centrally computer-controlled network, a mainframe on stand-by is normally needed. If a central computer is required, it can be much smaller than would otherwise be necessary, and would not cause the network to go down if it were to be put out of action. Any number of Locus 16 units can be interconnected using two-wire serial links. In a typical air traffic control system Locus 16 units would be installed at the radar sites to receive input data, and at each operator position. Each unit would be configured according to the local application, by plugging in appropriate circuit board modules - processors, display handlers, communication handlers and storage. (CW 405 8/8/1974 p3)

Algorithms improve EMI-Scanner system: Improved algorithms are the key to a four-fold improvement in picture resolution on the EMI-Scanner, the computer-aided brain X-ray system built by EM I around the Data General Nova 820 mini. Using the new algorithms, which were developed at EMI’s Central Research Laboratories, a considerable improvement in cranial diagnosis has been achieved, says EMI, particularly in the field of orbital examinations which cover investigations of the eye, the optic nerve and the tissue behind the eye. This is because using conventional X-ray techniques it is necessary to inject radio-opaque substances into the optic region to improve definition, subjecting the patient to considerable risk and demanding exceptional skill in the control of the X-ray dose. With the new package, optic nerve and eye-structure features are clearly visible. (CW 405 8/8/1974 p9)