EEssential

The white LED light strip     Three white LEDs in 3258 SMD footprint in series with a 150-Ohm resistor are powered by 12V.  Ten of the...

There are a few options that make the code size smaller when using GCC for embedded ARM processors. The newlib has a nano version which is...

The first thing is the value of the pull-up resistor.  Consider the fast mode 400KHz, or 2.5us period.  The I2C standard calls for a rise ti...

Motherboard   This motherboard has 8 ISA bus expansion slots, 3 of them with VESA local bus, 2 of them 8 bit.  The ISA bus dates back t...

I just recently opened a box of parts from my first PC.  It was purchased in 1994 from a computer store in Pasadena for maybe $1,800.  Back ...

When driving PWM to a motor with an H-bridge, we face with the choice of how to drive the off state.  The options are tri-stating the driver...

The good old 74LS series, once the staple of logic design, is all but forgotten, except that there might still be a lot lying around.  These...