I know some have been asking for a test video....I have been too busy with other things but I promise to finish this and upload the result....thanks guys
well.....I didn't expect that but ok.....lol...thank you very much......hope my video was helpful to you if your using the idea for your own project...
LED's are wired in parallel but opposite polarity so no issues. You can connect thousands of leds in parallel . The only issue then will be total current draw especially if they all come on at the same time. Thanks
geez its been quite a long time.......my sincerest apologies for such a delay.......but i finally saw your question.......i dont know why it shows now........but its no use questioning the workings of the internet...sometimes that happens....anyway, to answer your question, no there is no problem....first of all these LED's are wired alternately to each other which means cathode to anode ad anode to cathode so only one can come on at a time depending on direction of current flow and even if you do have parallel connected LED's, it still would not be a problem as long as sufficient voltage and current is available to turn all of them on.......example, LED's require between 10 t0 20 milliamps of current on average to turn on so if you have only10 miiliamps available going to 2 parallel LEDs than the one with the least voltage drop and least current will activate and not the other because of insufficient current....but increase the current to at least 20 or higher milliamps than both will turn on..only difference might be seen in their luminosity or how brighter one is than the other but they will both come on.....thanks, hope that finally answers your question and i am truly sorry it took so long to answer you.....
yes..you are correct...it is a 3-bit output.....but it also is an internal 18 bit capacity rom......consider it like a 1,024 bit chip with only a 1 line output which would be a 1 bit output, 1 k memory chip......this is a 3 bit output 18 bit capacity rom.
ROMS are very easy to understand.......hope my video helps you......please note I've used diodes in my prototype but ROMS can be made with other things too such as magnetic ferite cores, emmiter coupled logic using only transistors, FETS, MOSFETS, fuseable links such as used in PAL chips.......etc.....if you need some kind of memory capacity system very very specific and only certain amount of bits or bytes to eliminate wasted space then the way to go is to build it yourself like I've done.......all the best.
sorry about that but I didn't get to finish the project at the time I made the video....you can actually view a demo from "stoneslice" of my circuit as he used my circuit to develop his own tester and he shows the units function in testing different components....thanks
