Perfect failure detectors can correctly decide whether a computer is crashed. However; it is impossible to implement a perfect failure detector in purely asynchronous systems. We show how to enforce perfect failure detection in timed distributed systems with hardware watchdogs. The two main system model assumptions are ( I ) each computer can measure time intervals with a known maximum error, a...

We briefly survey the major thrusts of computer graphics activities, examining trends and topics rather than offering a comprehensive survey of all that is happening. The directions of professional activities, hardware, software, and algorithms are outlined. Within hardware we examine workstations, personal graphics systems, high performance systems, and low level VLSI chips; within software, s...

this paper presents the design procedure and implementation results of a proposed hardware which performs different satellite image compressions using fpga xilinx board. first, the method is described and then vhdl code is written and synthesized by ise software of xilinx company. the results show that it is easy and useful to design, develop and implement the hardware image compressor using ne...

Computer security aims at protecting confidentiality, integrity, and availability of sensitive information that are processed, used, or stored by computing systems. Computer scientists working in the field of computer security have successfully designed and developed software and hardware mechanisms to provide security in modern day computing devices. As compared to hardware security mechanisms...

In order to bring the theory of embedded computer architectures into practice, a practical assignment has been developed where students design digital hardware using the functional hardware description language CλaSH. The assignment focuses on specifying the structure of FIR filters and analyzing the resulting hardware. By working through the assignment, students gain insight in the use of high...

Computer architects have been studying the dynamically reconfigurable computer [1] for a number of years. New capabilities such as on-demand computing power, self-adaptiveness and self-optimization capabilities by restructuring the hardware on the fly at run-time is seen as a driving technology factor for current research initiatives such as autonomic [2, 3] and organic computing [4, 5]. Much r...

This paper surveys the design of embedded computer systems, which use software running on programmable computers to implement system functions. Creating an embedded computer system which meets its performance, cost, and design time goals is a hardware-software co-design p r o b l e w h e design of the hardware and software components influence each other. This paper emphasizes a historical appr...

This paper analyses the growth trends in the Indian Computer Industry for the period 1991-2002. We focus on the significance of size and age on growth of firms and whether or not the law of diminishing returns to learning holds for a high tech industry like computers. An important difference between the computer software and hardware industry is also taken into account: The software industry is...

Computer architecture and systems are fundamental areas in computer engineering. One of the most critical challenges facing computer engineering education and research is the characterization of the underlying complex computer systems. Traditionally, this can be done via either real hardware measurement or software simulation, each having its own pros and cons. Running workloads and measuring p...