Although there were several precursors that could be considered relays, the invention of the electromagnetic relay is attributed to Joseph Henry in 1835. Henry’s original…
What are relays?
A relay is a switch powered by a relatively small electric current that can turn a much larger electric current on or off. Essentially, relays…
How do I access the BIOS menu for my 12000-KT COM Express Type 6 carrier board?
To access the BIOS menu for the 12000-KT COM Express Type 6 carrier board, follow the steps below.
How do I access the BIOS menu for my Relio R2, Relio R3 or SBC-R9 embedded computer?
The below steps to access the BIOS menu are the same for Relio R2, Relio R3 or SBC-R9 embedded computer.
How do I reset the BIOS on my Relio R1 embedded computer when I cannot see the display?
To reset the the BIOS of the Relio R1 Embedded Computer, follow these steps:
What is optical isolation and why is it beneficial?
Optical isolation is a technique that protects electronic devices and circuits from ground loops, power surges, and electromagnetic interference. Duplicate ground references (ground loops) occur…
Parity, Checksum, and Cyclic Redundancy Check (CRC)
Parity is actually an extra bit that’s added to every data word. It can detect a one bit error within that data or byte Checksum…
Raw Mode or Bit-Shift Mode
Raw mode is actually the simplest form of communication. The card takes every bit of data that’s received from the communication line, groups it into…
Synchronous Data Link Control (SDLC) Vs. High-Level Data Link Control (HDLC)
High-Level Data Link Control (HDLC) takes Synchronous Data Link Control (SDLC) one step further. HDLC defines the content of the control byte, allowing the transmitter…