Activador Windows 8.1

http://programasfull1447.blogspot.com/2014/10/activador-windows-81-8-y-7-2014.html

Acondicionamiento de Algunos Sensores

http://bibdigital.epn.edu.ec/bitstream/15000/1238/1/CD-2644.pdf

Amplificadores Operacionales fuente unica, fuente simple, single supply design

Diseño con Amplificadores Operacionales con una sola fuente de Alimentación
Single Supply
https://www.uam.es/personal_pas/patricio/base_conocimientos/documentos/OpAmps_for_eveyone.pdf
https://courses.cit.cornell.edu/bionb440/datasheets/SingleSupply.pdf
http://www.ti.com/lit/ml/sloa076/sloa076.pdf
http://www.analog.com/static/imported-files/seminars_webcasts/3688645364170Section1.pdf
http://ww1.microchip.com/downloads/en/AppNotes/00682c.pdf
http://www.ti.com/lit/an/sboa059/sboa059.pdf
http://www.ti.com/lit/an/slyt189/slyt189.pdf
http://www.ti.com.cn/cn/lit/an/sboa092a/sboa092a.pdf
http://www.unicrom.com/Tut_opampFuenteUnica.asp

Cuenta shell para linux free gratis

http://aruljohn.com/freeshell/

# freebies

free ssh access to *nix accounts

Free Unix and Linux Shell Accounts

home ⇒ list of unix and linux accounts

This is an updated list of free shell providers. They are not mine and I'm only providing you with information regarding them. If you know of any, please email me and I'll add them.
DISCLAIMER: I'm not responsible for (1) anything you do with these servers or (2) if your code gets lost or (3) someone steals your code on these servers. Use them responsibly.

Picrofo - CentOS

OS: CentOS 6.5
Website: http://picrofo.com
Services: RAM: 2 GB, Processor: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, Bandwidth: 1000 Mbps
ssh command: ssh c1.linuxshell.picrofo.com

Picrofo - Ubuntu

OS: Ubuntu 14.04 LTS
Website: http://picrofo.com
Services: RAM: 2 GB, Processor: Intel(R) Xeon(R) CPU E5520 @ 2.27GHz, Bandiwdth: 1000 Mbps
ssh command: ssh u1.linuxshell.picrofo.com

Sagemath Alternativa para Matlab y ademas online

http://www.sagemath.org/

Sage is a free open-source mathematics software system licensed under the GPL. It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more.
Access their combined power through a common, Python-based language or directly via interfaces or wrappers. → Tour, Tutorial, Documentation

Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab.

LAbVIEW National Instruments ni Drivers Toolkits Toolboxes herramientas

http://download.ni.com/support/softlib/

ftp://ftp.ni.com/support/

Index of /support/softlib

 Name                    Last modified      Size  Description

 Parent Directory                             -   
 ASLISOs/                23-Jul-2013 10:20    -   
 AST/                    18-Aug-2014 09:35    -   
 Analog Video Generator/ 29-Apr-2013 14:55    -   
 AudioMASTER/            04-Dec-2012 14:20    -   
 CalExec Temp/           16-Feb-2011 12:35    -   
 Circuit_Design_Suite/   25-Sep-2009 14:30    -   
 Core/                   13-Oct-2010 07:05    -   
 DSA Apps/               10-Aug-2014 21:33    -   
 David test/             10-Apr-2014 16:00    -   
 Digital Electronics/    26-May-2009 16:08    -   
 HMI & Industrial Con..> 23-Nov-2011 14:24    -   
 IO Trace/               01-Aug-2014 14:49    -   
 LV Mobile Module/       08-Oct-2009 14:00    -   
 LVTPM/                  08-Oct-2009 14:00    -   
 MATRIXx/                28-Apr-2008 08:53    -   
 Motion Control/         11-Oct-2011 11:46    -   
 Motion/                 14-Oct-2014 09:34    -   
 NI Update Service/      03-Aug-2011 17:20    -   
 NISU_KB5Q5FJ4QW.exe     07-Mar-2012 16:46   47M  
 NISU_KB5Q5FJ4QW_down..> 07-Mar-2012 16:46  151K  
 NITPLATK2011.exe        17-Aug-2011 03:55   40M  
 NIVNA120/               10-Jan-2012 14:01    -   
 NIVNA1400.exe           06-Oct-2014 16:56  682M  
 NIVNA1400_downloader..> 06-Oct-2014 16:56  153K  
 NI_PQA/                 21-Aug-2014 17:29    -   
 NI_VMS/                 31-May-2011 03:45    -   
 NI_VeriStand/           01-Aug-2014 11:56    -   
 PXI-1470 Support Ins..> 05-Nov-2014 14:03  4.9M  
 PXI-1470 Support Ins..> 05-Nov-2014 14:03  154K  
 PXI/                    12-Aug-2013 20:00    -   
 PXIremote_controllers/  10-Jul-2007 15:32    -   
 RAID/                   31-Aug-2011 14:05    -   
 RF/                     29-Oct-2014 22:34    -   
 Requirements Gateway/   01-Aug-2014 14:23    -   
 Signal_Generators/      01-Mar-2012 10:15    -   
 TPLAT/                  04-Aug-2014 09:46    -   
 Timing_Sync/            06-Dec-2012 10:45    -   
 VST2013/                29-Aug-2013 16:56    -   
 VideoMASTER/            08-Jan-2009 14:22    -   
 VirtualBench/           22-May-2014 09:02    -   
 bill_test/              18-Jul-2014 13:51    -   
 calibration executive/  01-Feb-2011 10:05    -   
 can/                    10-Jul-2007 11:21    -   
 cdu/                    04-May-2011 17:00    -   
 devicenet/              10-Jul-2007 12:34    -   
 diadem/                 09-Jul-2014 12:43    -   
 digital_io/             09-Sep-2008 13:00    -   
 digital_multimeters/    15-Jul-2014 14:05    -   
 driver_cd/              04-Aug-2014 15:23    -   
 embedded controllers/   26-Nov-2012 16:05    -   
 embedded networks/      31-Aug-2009 13:47    -   
 en/                     13-May-2010 14:55    -   
 fieldbus/               10-Sep-2014 02:09    -   
 fieldpoint/             07-Mar-2014 17:02    -   
 first/                  14-Nov-2008 15:20    -   
 flexrio_iomodules/      08-Oct-2014 12:56    -   
 gpib/                   26-Sep-2014 11:28    -   
 high speed digitizers/  13-Jul-2012 16:05    -   
 high_speed_digital_io/  01-Aug-2014 17:19    -   
 high_speed_digitizers/  04-Jan-2010 14:29    -   
 i2c_spi/                10-Jul-2007 12:38    -   
 iaopc/                  10-Jul-2007 12:44    -   
 ivi/                    30-Nov-2007 12:20    -   
 kal/                    17-Jun-2014 14:37    -   
 labview/                20-Oct-2014 10:48    -   
 labviewSE/              05-Oct-2012 11:20    -   
 labwindows/             10-Jul-2007 13:44    -   
 license_management/     23-Jul-2010 10:25    -   
 lookout/                16-Sep-2013 11:25    -   
 mdns_responder/         14-May-2013 11:57    -   
 measurement_studio/     06-Aug-2007 09:00    -   
 motion_control/         31-Jul-2009 14:06    -   
 multifunction_daq/      16-May-2011 10:15    -   
 multisim/               11-Jul-2007 11:00    -   
 ni568xDotNETWrapper.zip 27-Aug-2014 11:36  217K  
 niVNA200_dotNET.zip     27-Mar-2013 19:45  129K  
 niVNADotNETWrapper.zip  06-Oct-2014 16:56   99K  
 ni_opc_servers/         07-Aug-2013 08:54    -   
 ni_requirements_gate..> 06-Feb-2009 08:50    -   
 ni_rio/                 08-Dec-2011 16:00    -   
 other_software/         29-Jul-2011 13:59    -   
 portable_daq/           06-Apr-2011 10:30    -   
 power_supplies/         12-Nov-2014 10:50    -   
 readme.html             19-Jun-2008 11:02   10K  
 reconfigurable_io/      31-Jan-2012 10:00    -   
 sample_file/            20-Jun-2013 15:15    -   
 serial/                 30-Oct-2012 15:10    -   
 server_explorer/        10-Jul-2007 13:34    -   
 signal_express/         29-Jul-2014 13:52    -   
 switches/               11-Jan-2013 17:05    -   
 system_configuration/   07-Oct-2014 14:18    -   
 teststand/              14-Jul-2014 11:03    -   
 ultiboard/              11-Jul-2007 12:00    -   
 update_service/         11-Sep-2014 07:00    -   
 vi logger/              12-Mar-2010 16:15    -   
 visa/                   10-Jul-2007 13:40    -   
 vision/                 02-Aug-2011 12:07    -   
 vxi/                    10-Jul-2007 15:44    -   
 wsn/                    20-Aug-2009 16:22    -   
 zJason_Test/            06-Dec-2013 16:20    -   
 zWesWTest4/             11-Sep-2014 08:50    - 

Index of ftp://ftp.ni.com/support/

Up to higher level directory

Name	Size	Last Modified
00LICENS.txt	12 KB	24/10/1995	12:00:00 a. m.
00README.txt	2 KB	01/10/2002	12:00:00 a. m.
20120515_2306.rar	1073968 KB	04/06/2012	12:00:00 a. m.
ASO		24/03/2000	12:00:00 a. m.
HMI		30/04/2007	12:00:00 a. m.
KnownIssuesG.txt	2 KB	29/08/2003	12:00:00 a. m.
NI-435x		14/09/2006	12:00:00 a. m.
PhoneHome		24/09/2009	12:00:00 a. m.
ReleaseNotesG.txt	3 KB	29/08/2003	12:00:00 a. m.
WLF4		06/05/2014	12:00:00 a. m.
aerodef		28/07/2014	6:58:00 p. m.
biobench		13/08/1998	12:00:00 a. m.
bridgeview		13/02/2001	12:00:00 a. m.
calexec		25/07/2012	12:00:00 a. m.
cdu		28/09/2011	12:00:00 a. m.
circuitdesignsuite		18/06/2007	12:00:00 a. m.
compware		12/11/2005	12:00:00 a. m.
compworks		20/07/2007	12:00:00 a. m.
crio		17/09/2013	12:00:00 a. m.
customer_education		12/02/2014	12:00:00 a. m.
daq		22/01/2010	12:00:00 a. m.
dasylab		10/10/2000	12:00:00 a. m.
demos		17/09/1997	12:00:00 a. m.
diadem		20/12/2010	12:00:00 a. m.
dmm		07/12/2005	12:00:00 a. m.
drivercd		26/04/2011	12:00:00 a. m.
dsa		19/03/2007	12:00:00 a. m.
error_not_found		05/10/2004	12:00:00 a. m.
ethernet		05/12/2000	12:00:00 a. m.
fieldpoint		22/07/2009	12:00:00 a. m.
fis		07/06/2011	12:00:00 a. m.
fpga		09/12/2003	12:00:00 a. m.
gateway		21/01/2009	12:00:00 a. m.
gpib		13/02/2009	12:00:00 a. m.
hardref		08/05/2001	12:00:00 a. m.
hiq		05/03/1999	12:00:00 a. m.
hsdigital		15/02/2006	12:00:00 a. m.
hsdigitizers		11/01/2007	12:00:00 a. m.
hsdl		20/03/2001	12:00:00 a. m.
iaopcserver		10/01/2006	12:00:00 a. m.
idnet		14/11/2014	11:45:00 a. m.
ieee		14/10/1999	12:00:00 a. m.
imaq		16/08/2007	12:00:00 a. m.
ind_comm		20/08/2013	12:00:00 a. m.
instr_drivers		28/02/2006	12:00:00 a. m.
instrupedia		23/04/1996	12:00:00 a. m.
ivi		29/11/2006	12:00:00 a. m.
kal		08/08/2007	12:00:00 a. m.
knowledgebase		01/08/2014	10:52:00 a. m.
labview		01/02/2013	12:00:00 a. m.
labwindows		17/09/1999	12:00:00 a. m.
logos		08/09/2005	12:00:00 a. m.
lookout		18/11/2005	12:00:00 a. m.
manuals		18/11/2014	9:03:00 a. m.
manuals - Shortcut.lnk	2 KB	03/08/2011	12:00:00 a. m.
matrixx		11/10/2004	12:00:00 a. m.
max		31/03/2008	12:00:00 a. m.
measure		23/03/1998	12:00:00 a. m.
misc		07/07/2006	12:00:00 a. m.
motion		09/02/2004	12:00:00 a. m.
mstudio		01/05/2008	12:00:00 a. m.
niDCD		28/02/2008	12:00:00 a. m.
niopcservers		20/10/2009	12:00:00 a. m.
nni		02/03/2004	12:00:00 a. m.
ns72t983.zip	4173744 KB	01/06/2012	12:00:00 a. m.
pilot		24/02/2011	12:00:00 a. m.
power_supply		16/03/2006	12:00:00 a. m.
pub		13/11/2003	12:00:00 a. m.
pxi		15/01/2010	12:00:00 a. m.
requirementsgateway		05/03/2007	12:00:00 a. m.
rf		30/10/2014	10:50:00 a. m.
rf_segment		16/10/2013	12:00:00 a. m.
rio		02/07/2014	2:27:00 p. m.
serial		24/07/2006	12:00:00 a. m.
signal_generators		09/03/2007	12:00:00 a. m.
signalexpress		09/03/2007	12:00:00 a. m.
signalprocessing		28/07/2003	12:00:00 a. m.
softlib		04/11/2014	4:43:00 p. m.
support_notes		02/03/1999	12:00:00 a. m.
switch		10/10/2008	12:00:00 a. m.
switchexecutive		12/08/2005	12:00:00 a. m.
techpubs		10/02/1999	12:00:00 a. m.
telecom		14/10/1999	12:00:00 a. m.
teststand		14/09/2009	12:00:00 a. m.
vbench		23/03/1998	12:00:00 a. m.
veristand		22/10/2014	11:29:00 a. m.
vilogger		18/05/2005	12:00:00 a. m.
visa		03/03/2004	12:00:00 a. m.
viusernet		12/03/2003	12:00:00 a. m.
vlm		22/06/2007	12:00:00 a. m.
vxi		25/11/2008	12:00:00 a. m.
vxipnp		12/11/2005	12:00:00 a. m.