SD Card

A SD card, or Secure Digital card, is a memory card used in portable devices for non-volatile memory storage. The cards are commonly used in tablet computers, cell phones, digital cameras, and GPS devices. The SD standard was first introduced in 1999 as an improvement over MultiMediaCards. The standard for SD cards is maintained by
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Spark-Gap Transmitter

A spark-gap transmitter is a mechanism for producing radio signals. It has been the primary radio transmission device during the early years of radio technology. It was soon superseded by other transmitters due to its discontinuous radio wave production and widely varying frequencies. How a Spark-Grap Transmitter Works A spark gap transmitter is basically composed
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How to Compare VoIP Providers

VoIP (Voice over Internet Protocol) is changing the way people communicate. VoIP utilizes a broadband Internet connection for routing telephone calls, as opposed to conventional switching methods, providing efficient use of existing Internet connections as well as lowering overall costs. Interestingly, there is no need for any large scale infrastructures; just combine a conventional phone
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Securing Remote Access and VPN Servers

Remote Access and VPN Server Security Issues Remote Access Servers (RAS) provides access to the network for remote users. The different types of remote access connections are Dial-in remote access, VPN remote access, and Wireless remote access. Dial-in remote access uses modems, servers running the Routing and Remote Access (RRAS) service, and the Point-to-Point (PPP)
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Lsass.exe System Error

The Lsass.exe System Error is a problem that may affect a computer system running Windows XP. Lsass (Local Security Authentication Subsystem Service) manages the log in process information for accounts on the system. Three things that may cause an error with the Lsass.exe process: The msvcrt.dll file was corrupted or replaced with an incompatible version.
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Microsoft Excel Password Recovery

Microsoft Excel documents can utilize three passwords: Password to open Password to modify Protect sheet or Protect workbook Password to Open The Password to open requires a user to enter a password to view the document. When the user sets a Password to open, the entire Microsoft Excel document is encrypted with the RC4 stream
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Ka Band

The Ka band uplink uses frequencies between 27.5GHz and 31Ghz and the downlink uses frequencies between 18.3 and 18.8Ghz and between 19.7 and 20.2Ghz. The Ka band is branch of the K band from the electromagnetic spectrum. The term “Ka-band” is from Kurz-above, which originates from the German phrase “kurz” implying short. Ka band dishes
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0x000000f4

What is Error Code 0x000000f4? Error code 0x000000f4 occurs when a computer process, program, or critical program thread unexpectedly terminates and the computer’s Operating System can no longer function on the Microsoft Windows OS. Error code 0x000000f4 is also known as the Windows Blue Screen of Death (BSOD). This error occurs more frequently on Windows
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