Question { 8582 }

what are the advantages of GUI systems ?

Answer

A GUI (Graphical User Interface) is a type of human-
computer interface (i.e., a system for people to interact
with a computer) that uses windows, icons, pull-down menus
and a pointer and that can be manipulated by a mouse (and
usually to some extent by a keyboard as well). An icon is a
small picture or symbol that represents a program (or
command), file, directory (also called a folder) or device
(such as a hard disk or floppy disk).

The GUI controls and monitors the entire by communicating
with DHS(Data Handling System) server programs. This paper
describes the communication model used by the DHS GUI.

Question { 3216 }

what are the advantages of a client or server model ?

Answer

Advantages
In most cases, a client-server architecture enables the
roles and responsibilities of a computing system to be
distributed among several independent computers that are
known to each other only through a network. This creates an
additional advantage to this architecture: greater ease of
maintenance.
All the data is stored on the servers, which generally have
far greater security controls than most clients. Servers
can better control access and resources, to guarantee that
only those clients with the appropriate permissions may
access and change data.
Since data storage is centralized, updates to those data
are far easier to administer than would be possible under a
P2P paradigm. Under a P2P architecture, data updates may
need to be distributed and applied to each "peer" in the
network, which is both time-consuming and error-prone, as
there can be thousands or even millions of peers.
Many mature client-server technologies are already
available which were designed to ensure
security, 'friendliness' of the user interface, and ease of
use.
It functions with multiple different clients of different
capabilities.