Scientific Notation

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  • Topic: SI prefix, Decimal, Exponentiation
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  • Published : December 12, 2012
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SCIENTIFIC NOTATION

* Scientific notation is a way of writing very large and very small numbers in a compact form. * A number written in scientific notation is written in the form: a x 10b

WRITING A NUMBER IN SCIENTIFIC NOTATION
* Shift the decimal point so that there is one digit before the decimal point. * Multiply by a power of 10, equal to the number of places the decimal point has been moved. * The power of 10 is positive if the decimal point is moved to the left and negative if the decimal point is moved to the right.

ENGINEERING NOTATION

* Engineering notation is similar to the scientific notation. In engineering notation the po0wers of ten are always multiples of 3. * A number written in engineering notation is written in the form: a x 10b

Where: a is a number greater than 1 and less than 999
B is an integer multiple of three

WRITING A NUMBER IN ENGINEERING NOTATION

* Shift the decimal point in “gropus of three” until the number before the decimal point is betqween 0 and 99. * Multiply by a power of 10 that is equal to the number of places the decimal point has been moved. * The power of 10 is positive if the decimal poiint is moved to the left and negative if the decimal point is moved to the right.

SI PREFIXES

* SIprefixes are shorthand way of writing enineering notation for si numbers.

1012| Tera| T|
109| Giga| G|
106| Mega| M|
103| Kilo| K|
10-3| Milli| M|
10-6| Micro| µ|
10-9| Nano| N|

COMMON ELECTRONIC SYMBOL & UNITS

Quantity| Symbol| Unit|
Current| I | Ampere(A)|
Volatage| V | Volt (V)|
Resistnace| R | Ohm ( Ω)|
Frequency| F| Hertz(Hz)|
Capacitor| C | Farad ( F)|
Inductance | L | Henry (H) |
Power| P | Watt ( W) |

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