Self-authoring code uses the memory addresses known after dynamic memory allocation: It uses direct addressing ( which requires low number of CPU cycles ), instead of indirect addressing which is traditionally required to accesses dynamic allocated memory.
Penzar Development TopSPICE - Limits of the demo version: Number of nodes 64; number of top level transistors and subcircuits 20; number of subcircuit transistors 15; total number of top level components 30; number of subcircuit definitions (macromodels) 5; maximum data memory usage 1 MByte.
Damhave Systems "Electronics Optimizer" - Free electronics design tool for advanced optimization and design of electronic circuits - with Optimizer, Monte Carlo and Worst Case Analysis, written in Java.
“EAGLE 6.6.0” is the latest edition which runs on Windows computers with PentiumIII CPU. Newer versions, e.g. “EAGLE 7.4.0” require a PentiumIV CPU. On Windows computers with PentiumIII CPUs , the installation crashes by an APPCRASH.
“EAGLE 7.4.0” asks on Win7 / Win8.1,.. to create the directory “C:\Users\<user>\Documents\eagle” if it doesn´t exist, to store data of user projects.
The online PCB board manufacting shop Würth Elektronik GmbH & Co. KG "WEdirekt Leiterplatten-Shop" - "Jungle" - “EAGLE Nutzer aufgepasst: mit EAGLE erstellte Leiterplatten lassen sich einfach über den 'PCB Quote'-Button bei WEdirekt anfragen und bestellen”, “Sie sind mit Ihrem Layout zufrieden? Klicken Sie auf ” ( den grünen Button ) ”'PCB-Quote' in EAGLE”. The “PCB Quote” button is visible if the “Board” window is opened. You are tken to these websites:
heise Download "Eagle 7.4.0" - “Mit Version 6 seiner Leiterplatten-Designsoftware Eagle hat der Hersteller CadSoft XML als grundlegendes Datenformat eingeführt, was das Bearbeiten von Projektdateien durch Skripte einfacher macht und die Grundlage für zukünftige Erweiterungen schafft”.
“HOSCHAR EDA ist nun Altium Europe GmbH: Der EDA-Geschäftsbereich der HOSCHAR AG gehört seit 17. Juli 2002 zum weltweit operierenden EDA-Hersteller Altium (früher unter dem Namen Protel bekannt) und führt seit dem die Geschäfte der Altium Europe GmbH”.
If you were just in need for electronics design and simulation software, notice that in the 1990th and early 2000s Hoschar Systemelektronik GmbH was willing to send you a free demo CD with tons of demo versions of such tools, including PC-SPICE. For non-professional operations, many of those demo versions were sufficient.
Altium Designer 14 is a still single-threaded 32-bit Windows application.
For proper 3D graphics operation, graphics cards with “Shader Model 3” support are necessary.
Intel i3 / i5 / i7 CPUs with “HD4000” graphics are suitable.
“Shader Model 3” was even implemented in some legacy AGP graphics cards like “Nvidia 6800”. See 3D Graphics Frameworks!
Altium Designer coomponents:
Platform.
Schematics design.
FPGA design ( with focus to support the prototyping hardware board Altium Nanoboard 3000. )
PCB design.
User interface:
“ö” ( German keyboard ) = ”~” ( US Keyboard ) = Shows all shortcut options.
F1 = Help.
Altium Designer 13 and earlier: Microsoft Win32 Offline help.
Altium Designer 14: Online Altium tecdocs.
Tab = Setup / configuration of the function just in use.
Bartels AutoEngineer for Windows and Linux - “A famous EDA/CAE/CAD/CAM software system for schematic capture, printed ciruit board design and IC/ASIC design”.
Editions:
The commercial “Bartels AutoEngineer” for Windows or Linux, with affordable entry edition.
The free, fully functional “BAE Schematic Editor” for Windows or Linux. “The software configuration (BAE Demo or BAE Schematics) can be selected during or after installation”.
Pulsonix User Forum - “Need a site login? If you believe you have a current maintenance contract but have not yet been given a username and password, please contact us with your full details and we will provide you with your account information” .