DIY CMOS RAM Memory

Step 7 Finished It

I hope you did well with building this (if you attemped it) and you learned something new. This very stuff is in our computers, iPods, and Xboxs. These circuit may be impractical in their current state, but this is the exact same circuitry used in little tiny ICs!

Comments

[elias.alberto]

Any tests on the frequency you can achieve with this? (i'm not thinking of any practical use, I'm just curious)

[Teslaling]

No tests, but the MOSFETs are rated at a few MHz so it should be fast...in theory...

[pyrohaz]

I think the main limiter of frequency for this would be the capacitance of the breadboard its self, i managed to get about 60khz out of a 555 timer cleanly driving a mosfet, remembering that if a mosfet isnt driven properly, it heats up due to being stuck between cut off and saturation :) Crossing wires also add capacitance.

[Teslaling]

I didn't think of that, but it would definitely play a factor in speed. Thanks for that information.

[Thereyouhaveit]

Woah , good start for you .
Who knows , you might join a big shot company dealing in memory and taking care of the ... 10nm process ? ;)

[riodoro1]

i guess it is 4 bits that gives you 1 byte.

[Teslaling]

No, its 8 bits in a byte... yeah its a bit strange

[Loukin]

What is the capacity on this ram?

[Teslaling]

Currently... 1 bit :D