open concept: Multiclient network
based software that consists of a server computer (a computer directly
connected to the microscope, and video camera) and a client computer (one
or more remote computers). The server and client of the ZEM software
communicate with each other over a network. The server computer provides
services (graphical information, audio and visual conferencing information)
to the client(s).
part is passive and waits for the client part's requests. When the client
puts in a request, the server makes sure to get the requested item and
sends it to the client. If multiple clients put in requests, the server
puts them in a queue and serves them in chronological order.
In a Multi-Client
situation, which is what the ZEM software is developed for, there
can not only be one server and one client, but also one server and many
clients. In theory the server part of the ZEM software can serve
up to 65000 clients. In reality the server has served up till 12 clients
are the advantages?
- The ZEM
SOFTWARE provides simultaneous support for different networks (LAN,
WAN, Satellite, ISDN, ADSL, and modem) at different speeds on different
platforms (WIN NT/2000/98/95, Mac).
- A large
number of people can participate in a session. During these sessions
there can be real-time, interactive exchange of information between
- As the
client software is free of charge, the software could be installed on
as many computers at various locations. The architecture of the software
allows the software be run on standard computers. Due to the presence
of the Internet the microscope could be accessed and controlled from
all these computers located at various locations. Also previous sessions
could be reviewed when the database is accessed. In the ZEM case,
a pathologist is free to travel, go home etc. As long as there is a
computer available that can be connected to the network (for instance
the Internet), he/she can participate in sessions from wherever he/she
happens to be.
purposes: each student can have his/her own client software installed
and follow classes/sessions. Moreover, the students do not even have
to be in the same room, or the same building, city or country.