GSC aka General Standards Corporation specializes in the development of high performance PMC, PCI and VME products. PMC boards include serial I/O, FPDP interface, optically isolated digital I/O, Sigma-Delta A/Ds, 16-bit 200KHz A/D and 400KHz D/A, and 8-96 Mbyte Flash memory. A new series of releases has been implemented. A complete list below.

• Linux device driver for the SIO4/SIO4A/SIO4B/SIO4BX/SIO4BXR family of boards. Version 1.32.1;
• Linux device driver for the SIO4B-SYNC and SIO4BX-SYNC family of boards. Version 1.32.1. This is for -SYNC boards only.

Sage is an open source mathematics computing environment (MCE) which covers many aspects of mathematics, e.g. algebra, calculus, elementary to very advanced number theory, cryptography, numerical computation, group theory and so on. Sage 4.3.3 has been released. In this version a total of 212 new functions were added since version 4.3.2 increaseing doctest coverage by 0.1%, then the total number of functions is now at 24808 (overall weighted coverage score: 81.6%). Some changes in this release are:

• Implement loading of pyx files when loading .sage files;
• Fix SPKG.txt in cddlib;
• Remove package GLPK 4.9;
• Custom definitions for LaTeX style;
• Fix Scilab interface doctests, add 'scilab (optional)' to systems in the notebook dropdown menu;
• Better documentation for patching spkg's.

Sage 4.3.3 closed 131 tickets, all of which are available here for your reading pleasure.

XCircuit is a powerful open source schematic capture program. It has most of the features of a general purpose drawing package and includes a symbol library facility that can be used to store user defined schematic symbols. Schematics, libraries of vacuum tube, flow charts, chemical diagrams, and even musical scores may be created with XCircuit by loading the freely available symbol libraries. A mathematical symbol typesetting capability is included in the program. XCircuit uses the PostScript language for its output and library files. The PostScript created by XCircuit is human readable which makes manual editing possible. In this new development release;

Fritzing is an open-source initiative that allows you to virtually design electronic circuits on a breadboard (although you could design circuits that aren't on a breadboard). This could save a lot of hours working on a breadboard if you have this amazing software at hand. In this new version of Fritzing a high-level summary of changes are:

• Snap to grid (experimental, switch it on in the View menu);
• Use arrow keys to move parts around (hold Shift to move by ten steps);
• Improved rats nest coloring (less obtrusive, and more reliable dimming if a net has been routed);
• Replaced zoom widget by a nice slider;
• Now fits on netbook screens as well (side-effect of the above);
• New parts: RGBB LED, LCD screen, slider pot, small rotary knob pot, Arduino pico and more mystery parts;
• Dutch translation;
• Bug fixes.

But if you're interested in the detailed changes, take a look at the individual code changes clicking here.

gEDA is a collection of tools which are used to make electrical circuit design, schematic capture, simulation, prototyping, and production. An new stable version (1.6.1-20100214) of gEDA has been released. This is the second stable release of the 1.6.x series. The purpose of this release is bug fixing. Major highlights of this version include (in mostly random order):

• General: added and updated lots of language translations in libgeda, gschem, and gattrib;
• libgeda/gschem: added accelerator mnemonics for root menus in gschem;
• Bugs fixed: fixed rendering with zoomed out dashed lines, fixed for some manpage issues, fixed slot editing routines to not edit inherited attributes.

The above is only a summary of the changes in this release. You can view all the commits/changes/authors for this release (version 1.6.1) here.

One of the leading manufacturers of time and frequency synchronization equipment, Meinberg designs and produces Network Time Servers (running NTP), PCI and PCI Express Slot Cards, USB connected devices and Industrial Synchronization Systems used in a wide range of applications like telecommunication, digital broadcasting, power generation + transmission and distribution, defense applications, air traffic safety, space, research and so on. The core strength of this highly specialized solutions provider is flexibility. Meinberg offers built-to-order systems which exactly fit into you environment and which fullfill your specific requirements. A GNU/Linux driver module/plug-in radio clocks with PCI or ISA bus, and Meinberg USB devices are available. This driver package supports all PCI and ISA cards and all USB devices manufactured by Meinberg. This version of the driver package should compile fine on standard PCs (i386 architecture), on Intel/AMD 64 Bit systems (x86_64 architecture) and SPARC; it has been tested under the following kernels and GNU/Linux distributions:

Kernels 2.4.x and 2.2.x are not supported by this driver version, so driver 1.1.x (without USB support) has to be used with those kernels. Driver files and programs included in the archive mbgtools for GNU/Linux is based on Meinberg's common driver library mbglib and implements the following programs/tools:

• mbgclock.ko: a kernel module which implements the device driver;
• mbgstatus: this program prints some status information for a device. The kind of information to be printed depends on the specific type of the card;
• mbgctrl: this program can be used to do some basic configuration of a card;
• mbgirigcfg: this program can be used to check and configure IRIG settings of cards which provide an IRIG input or output;
• mbgsetsystime: this tool reads the time from a device and sets the system time;
• mbgdcfmod: this program displays the modulation (i.e. the second marks) of a received longwave signal, e.g. from DCF77;
• mbggpscap: this example program reads time capture events from a card's time capture buffer. Note: this works only with cards which provide time capture inputs, and the DIP switches on those cards must be set up properly to enable time capturing;
• mbghrtime: this example program checks whether a card supports high-resolution time and reads those time stamps from the device, if supported;
• mbgfasttstamp: this examle program demonstrates how to read high resolution time stamps from a card very much faster than mbghrtime. However, this works only with cards which support memory mapped I/O. As of this writing this applies to the GPS170PEX only;
• mbgxhrtime: this example program also shows how to get time stamps faster than shown in mbghrtime. This is not as easy as mbgfasttstamp but can be used with every card which can be used with mbghrtime, even if the card does not support memory mapped I/O.

For more detailed information and installation instructions please refer carefully to the README file which is included in the archive. For more information click here.