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Main Memory
Mbyte
Motherboard
Multitasking
Multithreading
NVRAM
Operating
System
Parity Checking
PCI
Peripheral
Devices
Pin-1
Orientation
B-4
The part of a computer's memory which is directly accessible by the CPU
(usually synonymous with RAM).
Megabyte. A measure of computer storage equal to 1024 kilobytes.
See Mainboard. In some countries, the term Motherboard is not
appropriate.
The initiation and control of more than one sequence of operations. This
allows programs to operate in parallel.
The simultaneous accessing of data by more than one SCSI device. This
increases the aggregate data throughput.
NonVolatile Random Access Memory. Actually an EEPROM
(Electronically Erasable Read Only Memory chip) used to store
configuration information. See EEPROM.
A program that organizes the internal activities of the computer and its
peripheral devices. An operating system performs basic tasks such as
moving data to and from devices, and managing information in memory.
It also provides the user interface
A way to verify the accuracy of data transmitted over the SCSI bus. One
bit in the transfer is used to make the sum of all the 1 bits either odd or
even (for odd or even parity). If the sum is not correct, an error message
appears. SCSI uses odd parity.
Peripheral Component Interconnect. A local bus specification that allows
connection of integrated peripheral controller components, peripheral
add-in boards, and processor/memory systems. It bypasses the slower
ISA and EISA busses.
A piece of hardware (such as a video monitor, disk drive, printer, or
CD-ROM) used with a computer and under the computer's control. SCSI
peripherals are controlled through a SCSI host adapter.
The alignment of pin-1 on a SCSI cable connector and the pin-1 position
on the SCSI connector into which it is inserted. External SCSI cables are
keyed to ensure proper alignment, but internal SCSI ribbon cables may
not be.
Glossary
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