Patoloogia jätkub aeglaselt. Kas Georg Otsa nime saab kool ka edaspidi kasutada, seda veel ei tea. Autorite seisukohad ei pruugi ühtuda toimetuse omadega. Seminari teine osa oli kirja nik Loone Otsa koostatud do kumentaallavastus põgenike koond kujudest.
Davidson, P. To accommodate this, a number of control interfaces for example, analogue signals and RS serial lines must be employed. Ideally, all of the systems should be able to be controlled from a central location, remote from the actual devices.
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To this end a system based around VAX computers and VME crates has been designed and is currently being developed and implemented. Communication with the VAXstation is via DECnet, on a private ethernet to allow communication rates unaffected by unrelated network activity and potentially increasing the security of the system by providing Pohjus Sustav Foot possible network isolation point. Also on this ethernet are a number of terminal servers to control RS devices.
A central database contains all device control and monitoring parameters. The main control Pohjus Sustav Foot running on the VAXstation is responsible for maintaining the current values of the parameters in the database and for dispatching control messages to the appropriate VME crate or RS serial line.
Separate graphical interface processes allow the operator to interact with the control process, communicating through shared memory.
Many graphics processes can be active simultaneously, displaying either on a single or on multiple terminals. Software running on the rtVAX controllers handles the low-level device-specific control by translating messages from the main control process to VME commands which set hardware outputs on VME modules.