Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
betajet
User Rank
CEO
re: ESC helps drive Android beyond cellphone
betajet   4/6/2010 1:17:14 AM
NO RATINGS
Here is my understanding: Android uses the Linux kernel as its low-level operating system, providing a machine-independent model for application development. However, what is exposed to the user and developer is a Java-based system so that you cannot use an Android-based device as a general-purpose computer. In contrast, a GNU/Linux distribution provides compilers and object code libraries so that you can do anything you want with your computer, including rewriting the kernel and any open-source applications. Android is very similar to an iPhone (and I imagine iPad as well) which has a version of Mac OS X hidden inside, but you do not have full access to that layer when writing applications. It is exactly like when I got started in computer technology running FOCAL on a PDP-8 or BASIC on an HP 2100. The FOCAL or BASIC interpreter controlled very strictly what I could do, but did protect me from crashing the computer. However, when I got my hands on a PDP-11 that I could program in assembly language, the feeling of absolute freedom created a life-long thrill. Android and iPhone OS are OK if you want a stable consumer device with limited capabilities and strict corporate control over what you can use it for (ditto for Kindle). But if what you are seeking is freedom to make the device do whatever you want it to do, they are not what you want.

rick merritt
User Rank
Author
re: ESC helps drive Android beyond cellphone
rick merritt   4/5/2010 4:48:34 PM
NO RATINGS
Thx kman. To all: What are the hot Android topics for embedded developers these days?

kman12
User Rank
Rookie
re: ESC helps drive Android beyond cellphone
kman12   4/2/2010 6:25:54 PM
NO RATINGS
I believe Android is based on the Linux kernel 2.6.x. On top of that kernel, it has some core OS services (libraries) and its Dalvik virtual machine (similar to JavaVM) and application frameworks. So at its core, Android is Linux, but it is one of many variants of Linux distributions as the article points out.

rick merritt
User Rank
Author
re: ESC helps drive Android beyond cellphone
rick merritt   4/2/2010 5:12:56 PM
NO RATINGS
I invite any savvy developers to weigh in on the fine points of how Android differs from standard Linux. I understand it also varies from standard Java. According to Wikipedia: Android uses a version of Linux as its kernel (albeit tweaked by Google to fit Android needs and separated from the main Linux kernel tree),[94] but it is not a conventional Linux distribution; it does not have a native X Window System, nor does it support the full set of standard GNU libraries like its system libraries (GNU C Library). This makes it difficult to reuse existing Linux applications or libraries on Android.[95] Google no longer maintains the Android code they previously contributed to the Linux kernel, effectively branching kernel code in their own tree, separating their code from Linux. The code which is no longer maintained was deleted in January 2010 from the Linux codebase.[4][5][96]

Carleton
User Rank
Rookie
re: ESC helps drive Android beyond cellphone
Carleton   4/2/2010 4:47:21 PM
NO RATINGS
As far as I read on the Google Android developer site, Android runs on top of Linux. So, how do you replace Linux with Android? I'm a bit confused.



Top Comments of the Week
Flash Poll
Like Us on Facebook

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

Want a Voltera Desktop PCB Printer?
Max Maxfield
9 comments
I just received an email from my chum Javi in Spain. "Have you heard about Voltera (VolteraInc.com)? It's a Canadian company that is going to offer desktop-size PCB printers for fast ...

Aubrey Kagan

Have You Ever Been Blindsided by Your Own Design?
Aubrey Kagan
37 comments
I recently read GCHQ: The uncensored story of Britain's most sensitive intelligence agency by Richard J. Aldrich. The Government Communication Headquarters (GCHQ), Britain's equivalent of ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...