Panasonic PV-PD2000 User Manual download pdf (Page 52)

Questions and Answers (Cont)

■About Computers

•Windows and Macintosh

Q21: What is an OS?

A21: OS is an abbreviation for Operating System,

and it is also sometimes called “basic

software”. The OS is the basic software

provided for allowing the computer to be

used easily. For example, operations such as

reading data or displaying text cannot be

performed only with other software.

The OS performs these operations through

commands from the software.

The OS for PC/AT computers is Windows 3.1

or Windows 95, and the OS for Macintosh

computers is the Mac OS (System).

Q22: What are applications (software)?

A22: This is software for performing specific tasks

in a computer. Applications include, for

instance, word-processing and spreadsheet

software.

Q23: What is an interface?

A23: An interface is a means of connecting two or

more different devices. Interfaces are used in

a variety of contexts, including between

computers and external devices, and

computers and humans. For example,

interfaces include connection cables,

connection sockets, and keyboards.

Q24: What is resolution?

A24: The resolution indicates how many dots can

be displayed on a screen. The resolution is

shown in dots per inch, and the higher the

resolution, the better the printing quality.

Q25: What is dpi?

A25: The dpi is a unit of resolution which indicates

the number of dots per inch that can be

printed. Higher dpi allows more detailed

printing.

Q26: What is a printer port?

A26: A printer port is a socket for connecting a

printer to other devices. It is provided at the

rear of the computer.

Printer ports are classified into the following

two types based on the transmission system.

•Serial port

A serial port is an input/output socket for

connecting peripheral devices which allow

only one bit of data to be sent at a time,

such as a mouse or modem.

•Parallel port

A parallel port is an input/output socket for

connecting peripheral devices which

transfer data by simultaneously sending a

number of bits over separate lines.

Although the parallel port allows data

transfer at a higher speed than the serial

port, transfer cannot be performed over

long distances since interference will result

between the data lines.

This port is usually used to connect a

printer to a computer. In general, printing

with a Windows computer uses a parallel

port, while printing with a Macintosh

computer uses a serial port.

Q27: What is memory?

A27: The memory is a temporary storage location

for data when the computer performs

operations. Memory can be broadly divided

into RAM and ROM. RAM is an acronym for

random-access memory, a type of memory

which allows data to be read and stored

freely. Software programs and entered data

are stored in RAM. ROM, on the other hand,

stands for read-only memory, a special type

of memory which only allows data to be read.

The ROM contains fixed data for programs of

the particular computer.

Q28: What is a bitmap?

A28: A bitmap is a type of standard used for

storing graphics created by the computer as

a file. The graphics file is stored as a

collection of extremely small dots.

Q29: What is a dialogue box?

A29: A dialogue box is a specialized window on

Windows and Macintosh screens for

displaying specific information and soliciting

a needed response.

Q30: What is a printer driver?

A30: A printer driver is a program used to control

how the computer and printer interact. The

printer driver provides the printer interface

and font designation, functions of the

installed printer, and other necessary

information to Windows and Macintosh

systems.

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Panasonic PV-PD2000 User Manual Page 52

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