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ABC of electronics terms

(To find chips for distinct functions, see the functional pages.)

L

Label

Where	Manufacturer
www.polyonics.com/	Polyonics
www.seton.com/	Seton Labels
www.whbrady.com/	W.H. Brady

LAN

Local Area Network

www.gensw.com/	General Software's embedded LAN
www.premisesnetworks.com/	Premises Network (by VerticalNet)

See also:

• Ethernet
• WAN
• Cable
• Token Ring

Laptop PC

A PC that doesnt't have to stand on the floor or on the desktop, but can be held on your lap.

According to Intel in 200103: In a deep sleep mode their mobile processors currently use less than 0.1 watt. In average they use 0.5 watt on a total usage in a laptop system of 8 watt.

What uses the most watt?

LCD	32%
xVGA card	13%
harddisk and DVD	11%
chipset	12%
processor	7%

LCD

Liquid Crystal Display

These are really watery crystals that all start orienting in the same direction when you apply an electrical field through them so you can see through them and their grey value changes.

local	Text about LCD
local	Text about LCD from Digikey
local	Handle an LCD via RS-232 (product description)
www.beyondlogic.org/lcd/lcd.pdf	At 'Beyound Logic'
www.okisemi.com/communicator/public/nf/docs/PrdDisplay.html	Display drivers and controllers at Oki
ftp.psyber.com/tcj/faqs/lcd.faq	Text FAQ
www.rentron.com/Myke1.htm	Pic 2-Wire LCD Interface
www.rentron.com/Myke2.htm	LCD Animated Graphics Using The Pic 2-Wire LCD Interface
www.ilcsoc.org/	International Liquid Crystal Society
www.citilink.com/~jsampson/
www.doc.ic.ac.uk/~ih/doc/lcd/
www.hantronix.com/
www.iaehv.nl/users/pouweha/lcd.htm
www.repairfaq.org/ELE/HTML/LINK/F_LCD_tech.html
www.repairfaq.org/ELE/HTML/LINK/F_Tech_LCD.html
www.repairfaq.org/ELE/LINK/F_LCD_HD44780.html
www.repairfaq.org/ELE/LINK/F_LCD_progr.html
www.repairfaq.org/ELE/LINK/F_Theory_LCD.html
margo.student.utwente.nl/stefan/el/misc/lcd_faq.htm	FAQ from 1993
ourworld.compuserve.com/homepages/steve_lawther/charlcd.htm
pm.cse.rmit.edu.au/~pdunster/lcd.html
ftp.mcc.ac.uk/pub/micro-controllers/PIC/testlcd.c
www.industrycommunity.com/myforum/yk_see/	Photosensitive Materials for LCD Forum: Want to share information	about photosensitive materials in LCD; like color filter photoresist,	overcoat, resin black matrix and column spacer.

Where	Manufacturer
www.densitron.com/	Densitron
www.electronic-designs.com/	EDI Electronic Designs Inc
www.hantronix.com/	Hantronix
www.lcdinc.com/	LCD Inc
www.microelect.com/	ME Displays
www.optrex.com/	Optrex
www.sdd.samsung.co.kr/	Samsung Displays
www.seiko-usa-ecd.com/	Seiko Instruments
www.stanleyelec.com/	Stanley
www.sumcon.co.jp/	Sumcon

www.eemonline.com/	Search here
www.ilcsoc.org/L_Servers.html	More good links

LED

Light Emiting Diode

Information:

www.sciam.com/interview/2000/070500nakamura/

About the inventor of the blue LED

TS-LucoLED seems to have made a LED giving bright white light!
You can order them from Conrad (Order Nr. 149446) it seems.

local

companies

Level

Level sensors

See here.

Lighting of a theatre

• Dan Mills <dmills@abcde.demon.co.uk>
• ftp.psyber.com/tcj/faqs/dmx-512.faq

Little Endian

See Endianess.

Logarithm

local	How to calculate the logarithm function in embedded software.
www.interstice.com/~sdattalo/technical/theory/logs.html	Theory

Logic Analyzer

Quite expensive (because very fast) multichannel state recorder. It's kind of for digital electronics what a memory oscilloscope is for the analog electronics world. HP, Textronics etc. make them.

www.parker-lowe.net/logic/

Jeremy Proffitt is building one himself.

Lonworks

www.echelon.com/	Echelon
www.lonworks.com/	Echelon
www.lonworld2000.com/	Lonworld 2000 conference
www.ednmag.com/ednmag/reg/1999/070899/14cs1.htm	LonWorks
www.metra.com/	Metra
www.lonworld.com/	GWD Consulting

LSI-CAD

• www.ece.ucdavis.edu/sscrl/clcfaq/faq/faq-toc.html - FAQ

Lightning

Lightning can cause severe damage in electrical circuits connected to networks, like the mains, telephone lines or antenna's.

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