Reference
Terminator
A “terminator” is a kind of resistance
that is connected so that electrical signals are not reflected back at the end of
a daisy chain of peripherals. Also referred to as a “terminating resistance.”
Reference
SCSI ID
A “SCSI ID” is a number from 0 to 7 that
is used to identify equipment connected
by a SCSI interface. The SCSI ID can
be assigned to SCSI equipment in any
order.
Reference
IrDA
Up to seven peripherals can be connected by a daisy chain method. A “terminator” is attached to the equipment at each end of the daisy chain as resistance. (A SCSI board contains a built-in terminator.)
Each piece of SCSI equipment must be configured to have a unique ID
number. If the SCSI IDs overlap, there can be issues such as the peripherals failing to operate.
(3)Wireless interface
A “wireless interface” is an interface that transfers data using infrared or
wireless transmission technology. Transmission speeds can range from fast
to slow, but the distance of transmission is short at several tens of meters.
Wireless interfaces are therefore generally suited for short-range use such
as indoors.
Standards for wireless interfaces are summarized below.
Standard
IrDA
An interface that uses infrared communication. The transmission
distance is generally within two meters. If there are obstructing objects between the devices, interference can occur in the data transmission.
Bluetooth
A wireless communications interface that uses the 2.4GHz band to
achieve transmission speeds of 1Mbps within a range of 10 meters.
Integrated into computers, printers, PDAs, and mobile phones. Relatively resistant to obstructing objects compared to IrDA.
Abbreviation for “Infrared Data Association.”
2
Reference
Device
A “device” is a peripheral that is connected to a computer such as a keyboard, mouse, or display.
Reference
Plug and play
“Plug and play” is a function of Windows
that automatically configures the optimum settings for a peripheral when it is
added to a computer. Necessary device
drivers for the connected device are automatically added and configured. In order to activate it, plug and play must not
only be supported by the computer, but
also by the peripheral.
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Characteristics
Device driver
A “device driver,” also called a “driver,” is a piece of software that enables the use of a peripheral. Every peripheral requires a device driver,
which must be installed to use the peripheral. Device drivers must be developed to support the type of operating system and type of computer, and
are either provided with the device or can be downloaded from the Web
site of the manufacturer.
However, the latest operating systems are “plug and play,” which enables
peripherals to be used simply by connecting them.