In 1968, when I got my first job in computing, we didn't call that room full of computers with a disk drive the size of a Volkswagen an embedded system. But it was. I worked for Collins Radio and what we were working on was a message-switching system. Today, however, that same computing power could easily fit in a 1U rackmount box or be implemented on a Netwinder or Cobalt Qube.
The point is that calling a system embedded doesn't have anything to do with its size, but whether it performs some dedicated task. Besides the changes in size over the years, there have been cost changes. While my microwave doesn't have an embedded processor in it, most, do as do most traffic light controllers and virtually every printer in the world.
Doing an inventory of what is around me at home, here is my list of things that I know have embedded processors: Palm organizer, cell phone, FAX/answering machine, scanner, digital camera, video camera, dish TV receiver, VCR, stereo, laser printer, DSL modem car. At work I can add microwave, label maker, phone system, voice-mail system and conference phone.
This doesn't count other items that most likely have them as well: disk drives, tape drives, monitors, TV and clock radio. This is a big change from 1968. With $50 (US) products out there in the embedded market, there is a lot more to consider than just making a product that works.
We want to help you take the next step. Hardware costs have fallen dramatically, making it possible to put computers into relatively inexpensive products. Efficient code can reduce RAM and ROM requirements. But there are additional costs besides hardware. The OS for your product, development time, development tools and licensing all cost money. Shipping a product with bugs can cost you money and reputation.
With that I'd like to introduce a Linux Journal supplemental issue which will hit the streets October 10, 2000: Embedded Linux Journal. In this special issue you can look forward to conversations about:
industry news—emphasizing open-source software solutions
reviews of products to reduce development time and improve testing
case studies that will save you time
design solutions that show you why embedded Linux is the cost-effective answer
hardware vs. software considerations
Current Linux Journal subscribers who live within North America will receive this special supplement at no additional charge. This issue will also be heavily distributed at upcoming trade shows, other industry events, and to targeted mailing lists.
We're certain you'll enjoy this upcoming Embedded Linux Journal supplement. We look forward to your feedback!
Phil Hughes Publisher
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.Register Now!
- Google's SwiftShader Released
- SUSE LLC's SUSE Manager
- Interview with Patrick Volkerding
- My +1 Sword of Productivity
- Managing Linux Using Puppet
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- Non-Linux FOSS: Caffeine!
- SuperTuxKart 0.9.2 Released
- Tech Tip: Really Simple HTTP Server with Python
- Parsing an RSS News Feed with a Bash Script
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide