Microsoft Office Tutorials and References
In Depth Information
COM 20
ESSENTIAL INTRODUCTION TO COMPUTERS
WEB LINK
D ATABASE Database software (Figure 31) allows the user to enter, retrieve, and update data in
an organized and efficient manner. These software packages have flexible inquiry and reporting
capabilities that let users access the data in different ways and create custom reports that include
some or all of the information in the database.
Database
Software
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Database Software.
P RESENTATION G RAPHICS Presentation graphics software (Figure 32) allows the user to create
slides for use in a presentation to a group. Using special projection devices, the slides are
projected directly from the computer.
WEB LINK
Presentation
Graphics
Software
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weblink and then click
Presentation Graphics
Software.
NETWORKS AND THE INTERNET
A network is a collection of computers and devices connected together, often wirelessly, via
communications devices and transmission media. When a computer connects to a network, it
is online .
Networks allow users to share resources, such as hardware, software, data, and information.
Sharing resources saves time and money. For example, instead of purchasing one printer for
every computer in a company, the firm can connect a single printer and all computers via a
network (Figure 33); the network enables all of the computers
to access the same printer.
Most business computers are networked together. These
networks can be relatively small or quite extensive. A
network that connects computers in a limited geographic area,
such as a school computer laboratory, office, or group of
buildings, is called a local area network LAN ). A network (
that covers a large geographical area, such as one that
connects the district offices of a national corporation, is called a
wide area network WA N ) (Figure 34). (
client
FIGURE 31 Database software allows the user to enter,
retrieve, and update data in an organized and efficient manner.
client
printer
server
FIGURE 32 Presentation graphics software allows the
user to produce professional-looking presentations.
FIGURE 33 The local area network (LAN) enables two or more
separate computers to share the same printer.
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