Unformatted text preview: ining its
instructions and data, and one or more thread sharing the same address space. Hence
creation of a new thread, switching the CPU between threads, and sharing of resources
between threads of the same process can be done more efficiently than between processes
resulting in faster execution of the process and better overall system performance. A
distributed operating system is an operating system for a set of computers networked together whose goal is to make the multiple computers of the system appear as a single
large virtual system to its users instead of a collection of distinct machines.
Finally, in the area of programming languages, some of the concepts that gained
popularity during the fifth generation are JAVA programming language, and parallel
programming libraries like MPI (Message Passing Interface) and PVM (Parallel Virtual
Machine). JAVA is a new programming language that is primarily used on the World
Wide Web. It supports dynamic data types and dynamic protocols based on a concept
called Java-based applets. This feature of Java allows web pages to have dynamic
information and more interactivity with the users of web information. The MPI and PVM
libraries have basically been introduced to standardize message passing parallel programs
so that parallel programs developed for one message passing parallel computer can be
easily ported and executed on other message passing parallel computers.
The characteristic features of fifth-generation computers are as follows:
1. Portable PCs (called notebook computers) are much more smaller and handy than the
PCs of the fourth generation allowing users to use computing facility even while
2. The desktop PCs and workstations are several times more powerful than the PCs of
the fourth generation.
3. The supercomputers are several times more powerful than the mainframe
systems and supercomputers of the fourth generation.
4. Although the supercomputers require proper airconditioning of the rooms/areas in
which they are located, no aidcondit...
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This document was uploaded on 04/07/2014.
- Spring '14