A Computer Control System includes dataacquisition, information display and output control signals. In order to design such a system effectively we must first determine the required operational mode: automatic control (closed loop), computer assisted (open loop), or hybrid control. The choice of operating mode will depend on the nature of the plant, the complexity of the operation, the funds av...

A UNIX operating system together with a complete user environment has been implemented on the VAX-11/780 computer manufactured by Digital Equipment Corporation. The VAX-11/780 system provides 32-bit addresses and data. It uses the same input/output devices and the PDP-11 family and is controlled through a console computer which can be remotely accessed. Additionally, the VAX-11/780 is priced ne...

Computer simulators have generally been constructed at one of two levels of detail: the instruction level or the bit-time (logic) level. Such simulators have been produced for many years now and their value is well established. By contrast, only minor attention has been given to simulating computer systems at a macroscopic level. One type of macro-level simulator has been reported recently by H...

In this paper a comparison is provided between the membrane computing systems and the graphical interfaces of operating systems. A membrane computing system is a computing model using massive parallelism inspired by the functioning of living cells. The graphical schemes of these computing devices look like the windows of a graphical operating system representing programs running parallel on the...