I'm currently building a large project using discrete 8051 based microcontrollers to save me money. They teach me that it takes effort for a computer to perform basic math especially when the number is big (higher than 255).

I created a circuit with a more solid ground plane which perfectly works.Now I attempted to create the exact same circuit with a second batch of the exact same parts...
I recently purchased a set of NI-MH batteries online for their long lasting power, and so far they serve me well. In one order, I have received a free battery charger...
You don't say exactly what you're trying to do. I presume you're trying to raise a logic/programming line to +12V to program an EEPROM...Yes, that's exactly why...
I'm trying to make myself the proper voltages for VPP output using the fewest number of parts that are readily available in store (particularly from sayal electronics...

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