Dell PowerEdge 4300 Dell PowerEdge 4300 Systems User's Guide - Page 149

block, block size

Get Dell PowerEdge 4300 PDF manuals and user guides View all Dell PowerEdge 4300 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 149 highlights

Abbreviation for Resource Configuration Abbreviation for revolutions per minute. Utility. A read-only file is one that you are prohibited from editing or deleting. A file can have read-only status if: Its read-only attribute is enabled. It resides on a physically writeprotected diskette. It is located on a network in a directory to which the system administrator has assigned readonly rights to you. An operating mode supported by 80286 or higher microprocessors, real mode imitates the architecture of an 8086 microprocessor. Designed to run in real mode, MS-DOS (unassisted by additional software techniques) can address only 640 KB of conventional memory. Abbreviation for real-time clock. Batterypowered clock circuitry inside the computer that keeps the date and time after you turn off the computer. Acronym for small computer system interface. An I/O bus interface with faster data transmission rates than standard ports. You can connect up to seven devices to one SCSI interface. Abbreviation for SCSI device management system. Abbreviation for synchronous dynamic random-access memory. Abbreviation for scalable disk system. The frequency, measured in Hz, at which the screen's horizontal lines are recharged. A monitor's refresh rate is also referred to as its vertical frequency. Abbreviation for single-edge contact. Abbreviation for second(s). Abbreviation for ringer equivalence number. Abbreviation for radio frequency interference. Abbreviation for red/green/blue. The fundamental unit of data access for a hard-disk drive. For PC-compatible systems, a sector is usually 512 bytes. See also block and block size. An I/O port used most often to connect a modem or a mouse to your computer. You can usually identify a serial port on your computer by its 9-pin connector. Acronym for read-only memory. Your computer contains some programs essential to its operation in ROM code. Unlike RAM, a ROM chip retains its contents even after you turn off your computer. Examples of code in ROM include the program that initiates your computer's boot routine and the POST. A computer's system and video BIOS code is usually stored on ROM chips. Shadowing refers to the performanceenhancement technique that copies BIOS code to faster RAM chips in the upper memory area (above 640 KB) during the boot routine. Glossary 13

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
Glossary
13
5&8
Abbreviation for Resource Configuration
Utility.
UHDG¶RQO\±ILOH
A read-only file is one that you are prohib-
ited from editing or deleting. A file can
have read-only status if:
²
Its read-only attribute is enabled.
²
It resides on a physically write-
protected diskette.
²
It is located on a network in a
directory to which the system
administrator has assigned read-
only rights to you.
UHDO±PRGH
An operating mode supported by 80286
or higher microprocessors, real mode
imitates the architecture of an 8086
microprocessor. Designed to run in real
mode, MS-DOS (unassisted by additional
software techniques) can address only
640 KB of conventional memory.
UHIUHVK±UDWH
The frequency, measured in Hz, at which
the screen’s horizontal lines are re-
charged. A monitor’s refresh rate is also
referred to as its
vertical frequency
.
5(1
Abbreviation for ringer equivalence
number.
5),
Abbreviation for radio frequency
interference.
5*%
Abbreviation for red/green/blue.
520
Acronym for read-only memory. Your
computer contains some programs es-
sential to its operation in ROM code.
Unlike RAM, a ROM chip retains its
contents even after you turn off your com-
puter. Examples of code in ROM include
the program that initiates your computer’s
boot routine and the POST.
USP
Abbreviation for revolutions per minute.
57&
Abbreviation for real-time clock. Battery-
powered clock circuitry inside the com-
puter that keeps the date and time after
you turn off the computer.
6&6,
Acronym for small computer system in-
terface. An I/O bus interface with faster
data transmission rates than standard
ports. You can connect up to seven devic-
es to one SCSI interface.
6’06
Abbreviation for SCSI device management
system.
6’5$0
Abbreviation for synchronous dynamic
random-access memory.
6’6
Abbreviation for scalable disk system.
6(&
Abbreviation for single-edge contact.
VHF
Abbreviation for second(s).
VHFWRU
The fundamental unit of data access for a
hard-disk drive. For PC-compatible sys-
tems, a sector is usually 512 bytes. See
also
block
and
block size
.
VHULDO±SRUW
An I/O port used most often to connect a
modem or a mouse to your computer. You
can usually identify a serial port on your
computer by its 9-pin connector.
VKDGRZLQJ
A computer’s system and video BIOS
code is usually stored on ROM chips.
Shadowing refers to the performance-
enhancement technique that copies BIOS
code to faster RAM chips in the upper
memory area (above 640 KB) during the
boot routine.