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ABC of electronics terms

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

H

Hall Effect Sensors

More

Hard Disk Drive

www.kegel.com/drives/	By Dan Kegel
www.howstuffworks.com/hard-disk.htm	How it works
theref.aquascape.com/ - (gone?)	TheRef about floppy/hard disk drives

See also

• ATAPI
• IDE
• SCSI

Book

All the major interfaces are published in this book, which in its 8th edition last time I looked. This book is also good for IT and MIS types who have to do hard disk drive exchanges on computers, as every hard disk drive manufacturer -- and the model numbers for their products! -- are published in it. All in all, if you were ever looking for a book on IDE, SCSI or hard disk drives, this is the one book you want the latest edition of. It even comes with a CD of hard disk diagnostics tools that you'll find useful.(Review by George Mena)

Hardware

Where	Manufacturer
www.daburn.com/	Daburn Electronic
www.johnsoncomp.com/	Johnson Components
www.kaynar.com/	Kaynar
www.keyelco.com/	Keystone Electronics

Hayes command set

See Modem.

HDLC

High level Data Link Control is a standard communication link protocol established by the International Standards Organization (ISO). HDLC is the discipline used to implement ISO X.25 packet switching systems.

Is this new? No, Intel already announced a chip (the 8273) for it in it's 1978 databook. It's now used in the implementation of ISDN it seems. (Click on the advertisement above for more.)

HDSL

Could be:

• High Density Serial Link
• High bit-rate Digital Subscriber Line

www.rockwell.com/	Rockwell for example
www.telechoice.com/	All main players on the xDSL market

HDTV

High Definition Tele Vision (?)

local

More

Heatsink

Where	Manufacturer
www.aavid.com/	Aavid Thermal Tech
www.iercdya.com/	IERC
www.thermalloy.com/ - (gone?)	Thermalloy
www.wakefield.com/	Wakefield Engineering
www.zippertubing.com/	Zipper Tubing

HIPPI

www.t11.org/

The T11 Technical Committee home page (Fibre Channel, HIPPI, IPI, SBCON)

History of computing

Book:

History of electronics

smithsonianchips.si.edu/	Chip Collection at the Smithsonian
www.die-wuestens.de/	Lot of information about old electronic parts like tubes (in German)

Home automation

www.ednmag.com/ednmag/reg/1999/070899/Volume44-Issue14.asp

Issue of EDN about it

See also Lonworks

Home built computer

users.supernet.com/sokos/page3.htm	FAQ by Mark Sokos
ftp.psyber.com/tcj/faqs/achh.faq	FAQ in text (old)
www.technology.niagarac.on.ca/courses/comp630/homebrew.htm	FAQ in HTML (old)
news:alt.comp.hardware.homebuilt	Posted every two weeks