Sun Microsystems SPARCstation Voyager Service Manual page 172

ISDN An acronym for Integrated Services Digital Network. A technical standard that
provides for fully digital transmission and reception of data, and fully digital
end-to-end connectivity of telecommunications devices across a public
network.
Memory Card A small board which usually contains several DRAMs. These cards are added
to a system to increase the amount of memory available to the CPU.
NVRAM An acronym for non-volatile random access memory. The NVRAM is used to
store system variables used by the boot PROM. It also contains the system's
hostid number and Ethernet address.
PCMCIA Personal Computer Memory Card International Association is an international
organization that has defined interface standards for Personal Computer
Cards. These PC Cards add memory, mass storage and I/O capabilities to
mobile computing systems. You can use a Sun modem contained on a PCMCIA
card on your SPARCstation Voyager workstation.
point-to-point protocol
(PPP) The successor to SLIP, PPP provides router-to-router and host-to-network
connections over both synchronous and asynchronous circuits.
power management The regulation of a computer's power consumption.
Resume Turning the power on after a suspend. The resume operation restores the
system to the point at which it was suspended.
SCSI Small Computer System Interface; pronounced "scuzzy."
SLAVIO This chip contains all of the control logic referred to as slave I/O devices.
These devices are serial ports, floppy controller, EPROM, TOD chip and
NVRAM.
suspend A means of turning off the power in which the system state is saved to disk.
See also resume.
system Any computer that allows you to run programs or applications. In this book, it
means the SPARCstation Voyager workstation unit together with the Sun
operating system and peripheral hardware devices.
system unit The enclosure containing the system memory, central processing unit, hard
disk, floppy drive, and video board.
TOD An acronym of Time of Day. This is a special timekeeping chip that keeps track
of what day and time it is.
150 SPARCstation Voyager Service Manual • December 1994