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Introduction to Localarea Networks
Published in Paul J. Fortier, Handbook of Local Area Network Software, 1991
A computer network interconnection system is defined as an interconnected collection of autonomous computers (Figure 1-4) that are interconnected for the purpose of exchanging information and services. Each computer has its own autonomous operating system, and there is no master/slave relationship. The components of such a system are cooperatively autonomous but mutually suspicious of each other. They use dedicated front-end processors, or special purpose input/output software and hardware for data communications, with the unit of transfer typically being the packet. The front-end processors or interconnection hardware and software require handshaking-type protocols to effect communications.
Computational Characteristics of High Performance Embedded Algorithms and Applications
Published in David R. Martinez, Robert A. Bond, Vai M. Michael, High Performance Embedded Computing Handbook, 2018
Arakawa Masahiro, A. Bond Robert
While regular memory accesses, dense-matrix mathematics, and simple program flow control dominate front-end processing, back-end processing has elements of more general-purpose computing. The front-end processor reduces the input signals or images to a set of higher-level objects such as detections or features; these objects are passed to the back-end processor for further processing. Thus, whereas front-end processing is mostly stream-based, back-end processing predominantly manipulates higher-level, composite objects. These more complex objects and the programs that use them distinguish back-end processing from front-end computations.
Asymmetrically Switched CHB Multilevel Inverters with Harmonic Mitigation Techniques Applied to Photovoltaic Power Generation
Published in IETE Journal of Research, 2022
Rubell Sen Goopta, Avik Bhattacharya
Real-time simulations are important to design and verify the system performance and correctness as models developed in real-time are accomplished at the same rate with genuine physical system. The OPAL-RT complete simulation module relates with Matlab/Simulink of SimPowerSystem through RT-LAB software. The main purpose of the simulator is to gadget real-time, HIL and control-in-the-loop (CIL) simulations. The OP5600 is a complete simulation system capable of operating with either Spartan 3 or Virtex 6 FPGA platforms. It is designed to be used either as a desktop (or shelf top) or as a more traditional rack mount. It contains a powerful Target Computer and a flexible, high-speed Front End Processor and a signal conditioning stage. The design makes it easier to use with standard connectors (DB37, RJ45 and mini-BNC) without the need for input/output adaptors and allows quick connections for monitoring. In its standard configuration, the lower part of the chassis contains a powerful target computer that can be added to a network of simulators or can act as a standalone.