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ABC of electronics terms

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

I

I2C

local

This entry got it's own page.

I2S

www.semiconductors.com/acrobat/various/I2sbus.pdf

At Philips

IDE

Can mean:

• Hard disk bus standard: Integrated Device/Drive Electronics
• Integrated Development Environment

IDE (Hard disk bus standard)

The reason it's called Integrated Device Electronics is cause most of the goo needed to make the drive talk is integrated into the drive. In contrast with the ST506 days when the controller and drive BIOS were on a separate card. The design was made to be better, cheaper and more upgradeable. There's more the drive manufacturer can play with to suit themselves, such as packing more sectors in the outer cylinders, caching and upping speeds, without affecting the rest of the system.I believe it was a Micropolis invention, but my memory is getting a little rusty here.Bill
Roger Barraud later suggested that it was invented by Quantum.
Someone from Electronics 2000 in Australia (international computer company, I think) recalls that the first ones they could buy came from Miniscribe, were 40 Mbyte in size and used a 8051 MCU.
Miniscribe was later swallowed up by Maxtor who then used the factory to produce the infamous turn it on and see if it will boot this time 7040 and 7080 drives. They had no solid connectors between the drive and the controller board but landing pads on each side with a rubber connector with vertical metal strips in it. Press together job to make the connection. The problem with these was the expansion and contraction of the rubber with temperature breaking the bond (just after warranty of course).

local	More (Good!)
local	Even more
local	Peter Faasse's IDE project (110+ K)
local	Free C source with IDE routines
thef-nym.sci.kun.nl/cgi-pieterh/atazip/atafq.html	Enhanced IDE/Fast-ATA FAQ, by John Wehman and Peter den Haan
www.seagate.com/support/kb/disc/eide.html	At Seagate
www.zettweb.com/semiconductors/hwb//co_IdeInternal.html	Pin description
www.hut.fi/Misc/Electronics/pc/storage.html#ide	In Finland
www.ent.ohiou.edu/~welker/ide.txt	Peter Faasse's IDE Interface for the 6803
ftp.mpoli.fi/pub/hardware/CDROM/OTHER/8020R26.ZIP	About CD-ROM standard
www.mpoli.fi/files/hardware/CDROM/OTHER/	A lot of CD-ROM data and software
www.cs.ruu.nl/wais/html/na-dir/pc-hardware-faq/enhanced-IDE/part1.html	EIDE/fast ATA FAQ
thef-nym.sci.kun.nl/~pieterh/storage.html	many related links and info

ATA Packet Interface (ATAPI) for CD-ROM, SFF 8020I

• Global Engineering Documents
• 15 Inverness Way East
• Englewood, CO 80112-5704
• tel: +1-800-854-7179
• tel: +1-303-792-2181
• fax: +1-303-397-2740

Book:

title	order at Amazon USA	price indication
SCSI Bus and IDE Interface, the	ISBN: 0201422840	out of print
SCSI-Bus und IDE-Schnittstelle. Peripherie-Schnittstellen: Hardware, Protokollbeschreibung, Anwendung	ISBN: 3827314178	DM 80

General sites:

www.supportsource.com/	Micro House SupportSource
www.ptltd.com/	Phoenix Technologies
www.wdc.com/	Western Digital

See also:

• ATAPI
• Hard Disk Drive
• SCSI

IDE (Integrated Development Environment)

See also the chapters Assembler, Disassembler, Emulator and Simulator. These things are also called SDK (Software Development Kit), when it's for developing software for specific hardware.

IEC

International Electrotechnical Commission.

Standards commission. For example: IEC-601 is a well recognized international EMC and/or electrical safety standard suite.

IEEE

Institute of Electrical and Electronics Engineers

They establish electrical standards among other things.
See www.ieee.org/

Newsgroups
news:ieee.announce
news:ieee.config
news:ieee.general

See also ANSI, CCITT, CEN, DIN, ISO, NEN

IEEE 1284

www.fapo.com/

Warp Nine (has info and FAQ)

IEEE 1394

This is a fast serial bus. Apple calls it 'firewire'. Sony calls it 'i-wire' I think.

www.lavalink.com/1394PRODS.html

Buy PC boards and adapters etc.

Image Sensor

This is a part that can record a whole image at once. It used to be done with very expensive radio tubes, but now there are solid state CCD* and CMOS* image sensors resulting in cheap appliances as WebCam's.

www.beyondlogic.org/

CMOS* Image Sensors

Inductor

local	Inductor manufacturers
local	Some emails about measuring inductance

InfraRed

local	Text with lots of hints, mainly about IrDA
www.rentron.com/project03.htm	Infrared Remote Control Project
www.ustr.net/infrared/infrared1.shtml	Project and explanations
local	Lite-On

See also IRDA, local.

Instruction Set

The set of instructions a processor or controller understands and can execute.

local

Instruction sets

Instrument

Where	Manufacturer
www.fluke.com/	John Fluke
www.tecentral.com/	Telogy

Insulator

Where	Manufacturer
www.vonrollisola-usa.com/	TransTherm

Internet

Internet is the world-wide network connecting a lot of computers.

See Internet.

IPI

www.t11.org/

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

IRDA

• www.irda.org/
• See also InfraRed

ISA

The bus of the original IBM PC/XT.
Later expanded to the EISA bus.

ISA Bus Specification P996

IEEE Service Center

445 Hoes Lane

PO Box 1331

Piscataway, New Jersey 08855

local	About the ISA and the PC/104 bus
www.nctnico.cistron.nl/	Hardware Web: ISA bus and ...
www.midiweb.com/hww/	Hardware Web: ISA bus and ...

See also EISA

Another interesting source of information on ISA is the documentation from various support chipset manufacturers. The quality varies, but they usually define ISA signals, supply timing diagrams, provide AC specs, etc. Ask you local distributor for datasheets on as many different products as you can get.

For example:

• 82420/82430 PCIset ISA and EISA Bridges
• Intel
• order # 290483-002

is one I have handy, and may still be available. This is for a chip that converts signals between PCI and ISA. As a byproduct, you get documentation on ISA signals.

RadiSys sells chipsets for embedded applications. Our datasheets cover these signals, but the quantity and quality of documentation is poorer than what is found in Solari. We can't afford to write a book for every chipset we make. You can find our stuff at www.radisys.com/.

AT Bus Design

Solari

ISDN

Integrated Services Digital Network. This is the conventional form of digital telephony.

Lots of books about ISDN.

ISDN
alumni.caltech.edu/~dank/isdn/	Everything about ISDN!

ISO

International Standards Organization

www.iso.ch/
www.iso.com/ - Not this one, it's the Insurance Services Office, Inc.

See also ANSI, CCITT, CEN, DIN, IEEE, NEN

ISO 9000

For info about free ISO 9000 information seminars, call +1-248-543-6040, ext. 412.
www.integsolutions.com/ - Integral Solutions <integsol@internetmedia.net>