Sumber :
National Geographic Indonesia, Agustus 2005. Halaman 63-64.
Energy Solar
Powering the future
Cat2950# write eraseThen, check the Catalyst's configuration :
[OK}
Cat2950# reloadSystem configuration has been modified. Save? [yes/no]: no
Proceed with reload? [confirm]y
%SYS-5-RELOAD: Reload requested
C2900XL Boot Loader (C2900-HBOOT-N) Version 11.2(8.1)SA6, MAINTENANCE INTERIM SE
Compiled Fri 14-May-99 17:42 by jchristy
starting...
Base ethernet MAC address: 00:30:80:3a:f1:c0
Xmodem file system is available.
Initializing Flash...
...
...
...
Press RETURN to get started!
%PARSER-4-BADCFG: Unexpected end of configuration file.
%SYS-5-CONFIG_I: Configured from memory by console
%SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C2900XL Software (C2900XL-H2S-N), Version 11.2(8.2)SA6, MAINTENANCE INE
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Wed 23-Jun-99 17:48 by boba
C2900XL UNIT: Complete
Switch>
Switch> enable
Switch# show running-config
Check out :Current definitions of the base units, as taken from the Comptes Rendus (CR) of the corresponding CGPM, are shown below indented and in a heavy sans-serif font. Related decisions which clarify these definitions but are not formally part of them, as taken from the Comptes Rendus of the corresponding CGPM or the Procès-Verbaux (PV) of the CIPM, are also shown indented but in a sans-serif font of normal weight. The linking text provides historical notes and explanations, but is not part of the definitions themselves.
It is important to distinguish between the definition of a unit and its realization. The definition of each base unit of the SI is carefully drawn up so that it is unique and provides a sound theoretical basis upon which the most accurate and reproducible measurements can be made. The realization of the definition of a unit is the procedure by which the definition may be used to establish the value and associated uncertainty of a quantity of the same kind as the unit. A description of how the definitions of some important units are realized in practice is given on the BIPM website,
A coherent SI derived unit is defined uniquely only in terms of SI base units. For example, the coherent SI derived unit of resistance, the ohm, symbol , is uniquely defined by the relation
Finally, it should be recognized that although the seven base quantities – length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity – are by convention regarded as independent, their respective base units – the metre, kilogram, second, ampere, kelvin, mole, and candela – are in a number of instances interdependent. Thus the definition of the metre incorporates the second; the definition of the ampere incorporates the metre, kilogram, and second; the definition of the mole incorporates the kilogram; and the definition of the candela incorporates the metre, kilogram, and second.
2.1.2 Symbols for the seven base units
The base units of the International System are listed in Table 1, which relates the base quantity to the unit name and unit symbol for each of the seven base units (10th CGPM (1954, Resolution 6); 11th CGPM (1960, Resolution 12); 13th CGPM (1967/68, Resolution 3); 14th CGPM (1971, Resolution 3)).
Base quantity | SI base unit | |||
Name | Symbol | Name | Symbol | |
length | l, x, r, etc. | metre | m | |
mass | m | kilogram | kg | |
time, duration | t | second | s | |
electric current | I, i | ampere | A | |
thermodynamic temperature | T | kelvin | K | |
amount of substance | n | mole | mol | |
luminous intensity | Iv | candela | cd | |
Factor | Name | Symbol | Factor | Name | Symbol | |
101 | deca | da | 10–1 | deci | d | |
102 | hecto | h | 10–2 | centi | c | |
103 | kilo | k | 10–3 | milli | m | |
106 | mega | M | 10–6 | micro | µ | |
109 | giga | G | 10–9 | nano | n | |
1012 | tera | T | 10–12 | pico | p | |
1015 | peta | P | 10–15 | femto | f | |
1018 | exa | E | 10–18 | atto | a | |
1021 | zetta | Z | 10–21 | zepto | z | |
1024 | yotta | Y | 10–24 | yocto | y | |
Prefix symbols are printed in roman (upright) type, as are unit symbols, regardless of the type used in the surrounding text, and are attached to unit symbols without a space between the prefix symbol and the unit symbol. With the exception of da (deca), h (hecto), and k (kilo), all multiple prefix symbols are capital (upper case) letters, and all submultiple prefix symbols are lower case letters. All prefix names are printed in lower case letters, except at the beginning of a sentence.
The grouping formed by a prefix symbol attached to a unit symbol constitutes a new inseparable unit symbol (forming a multiple or submultiple of the unit concerned) that can be raised to a positive or negative power and that can be combined with other unit symbols to form compound unit symbols.
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Similarly prefix names are also inseparable from the unit names to which they are attached. Thus, for example, millimetre, micropascal, and meganewton are single words.
Compound prefix symbols, that is, prefix symbols formed by the juxtaposition of two or more prefix symbols, are not permitted. This rule also applies to compound prefix names.
Prefix symbols can neither stand alone nor be attached to the number 1, the symbol for the unit one. Similarly, prefix names cannot be attached to the name of the unit one, that is, to the word "one."