Panasonic NV-MPD1EN - Инструкция (Страница 108)

ENGLISH
■ About Computers
•Windows and Macintosh
Q21: What is an OS?
A21; OS is an abbreviation for Operating System, and it
is aiso 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 MacOS (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
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.
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