Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 5   >   >>
JezmoSSL
User Rank
Rookie
Re: Embedded what?
JezmoSSL   10/10/2014 6:50:00 AM
NO RATINGS
An embedded system is one which is designed to prform a specific function and doesnt have the specific function changed by the user, I.E its not a general purpose computer

David Ashton
User Rank
Blogger
Re: Programming Closer to the Hardware
David Ashton   8/2/2014 8:17:28 PM
NO RATINGS
@Sranje... "I thought than anything embedded has no keyboard (or its equivalent)"

In most cases this is true, anything with a keyboard is usually a computer in its own right.  But what about (for example) the old Blackberry?  it is pretty well certainly embedded, as it's a phone, but it has a keyboard, and not just a numeric one.

I think the functionality is more important than what is used for I/O??

sranje
User Rank
Manager
Re: Programming Closer to the Hardware
sranje   8/2/2014 6:43:23 PM
NO RATINGS
I thought than anything embedded has no keyboard (or its equivalent)

elizabethsimon
User Rank
CEO
Re: Not a computer
elizabethsimon   6/11/2014 11:37:08 AM
NO RATINGS
@betajet So the fact that the product contains a computer is an implementation detail, not a requirement.

I think that's the real distinguishing factor betwen an embedded system and other uses of computers. By that definition, a router could be an embedded system but a smart phone wouldn't.

 

 

 

Wnderer
User Rank
CEO
Re: Programming Closer to the Hardware
Wnderer   6/11/2014 9:27:33 AM
NO RATINGS
@David I see your point. TI has embedded analog in some of its chips. Micro- controllers are microprocessers with embedded memory and as others have said here an embedded system is a system with some sort of computer embedded in it. I guess the debate revolves around at what point does the functionality of the computer go beyond just the operating requirements of the system and make it a system with a computer instead of an emebedded computer system.

Max The Magnificent
User Rank
Blogger
Re: Embedded what?
Max The Magnificent   6/11/2014 9:04:03 AM
NO RATINGS
@mjayme: ...the best definition I found was "software is what you blame, hardware is what you kick"

I love it (and I will be using it myself before the day is out :-)

mjayme
User Rank
Rookie
Embedded what?
mjayme   6/11/2014 8:12:08 AM
NO RATINGS
I always thought of a Embedded System as "a computational system dedicated to a fixed set of functions", where "computational system" is used to separate it from machines (electronic or mechanical), but I am also findind it harder and harder to sustain, as lately am thinking more and more of state machines and programmable logic as controllers for simple functions, due to the evolution level of these. It seems everybody think that a fan or oven must have a 32-bit processor running Linux... Maybe you have to connect your oven to an App Store and run Candy Crush on it.

Seems like the discussion about the definition of hardware and software, where, up to now, the best definition I found was "software is what you blame, hardware is what you kick", but this is also blurring...

 

betajet
User Rank
CEO
Re: Not a computer
betajet   6/10/2014 9:34:19 PM
NO RATINGS
That's an excellent point.  The embedded computer provides (most of) the functionality for the product, but the product manufacturer would be perfectly happy to use something cheaper to get that functionality.  So the fact that the product contains a computer is an implementation detail, not a requirement.

David Ashton
User Rank
Blogger
Re: Programming Closer to the Hardware
David Ashton   6/10/2014 8:50:32 PM
NO RATINGS
@Wnderer - coincidentally TI are advertising a webinar at the moment:

"If you're working on a design and aren't sure whether to choose standalone analog components or embedded analog built into a microcontroller, our free webinar can help you decide."

However the Registration page uses "Integrated Analog" rather than "Embedded Analog" which was in the email I got.

I'd still rather go with the definition of a computer embedded in another product.

 

 

betajet
User Rank
CEO
Re: Ancient View
betajet   6/10/2014 6:07:31 PM
NO RATINGS
mhrackin AKA "s/n 1" suggested: "embedded systems run firmware, not software."

First, I'm very impressed with 709 and PDP-1.

Now regarding firmware: that's a reasonable distinction for some kinds of embedded systems, such as a mouse MCU which runs a program that will never be replaced.  However, "firmware" [*] now includes the contents of a PC's boot ROM [**], and we all agree PCs usually aren't embedded systems.  Plus, a complex embedded system such as a data communications box generally has both a boot ROM (firmware) and a download image (somewhere between firmware and software).  Since it generally takes quite a few releases before the download image of a complex embedded system gets stable enough to call it "firmware", maybe we should call it "Jelloware".

JMO/YMMV

Footnotes:

[*] In my experience, the word "firmware" never really caught on and as such Humpty Dumpty's scornful use of words applies.

[**] Yes, I realize that a PC's boot ROM is usually Flash nowadays.  Personally, I like the term "read-mostly memory" (RMM) for non-volatile storage that is writable, but it's so slow that you don't want to do it very often.  The term "RMM" never caught on either :-)

Page 1 / 5   >   >>


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Energizing the Young Engineers of Tomorrow
Max Maxfield
14 comments
It doesn't seem all that long ago when I was a bright-eyed, bushy-tailed young engineer. Now I feel like an old fool, but where are we going to find one at this time of the day (LOL)?

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...