Timeline for Can components like EPROM or NE 555 timer be built from scratch?
Current License: CC BY-SA 4.0
12 events
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| Apr 20, 2023 at 1:29 | comment | added | PStechPaul | You might be able to build the equivalent of an EPROM or EEPROM with an array of bistable flip-flops, powered by a battery or super-capacitor. Or possibly an array of capacitors and MOSFETs such that the capacitance and leakage current holds the value long enough. But that would probably only work for a few days. You might also consider a magnetic core memory as was used in early computers. | |
| Apr 19, 2023 at 23:15 | vote | accept | 0xfffe | ||
| Apr 19, 2023 at 20:57 | answer | added | giel bloks | timeline score: -1 | |
| Apr 19, 2023 at 20:57 | comment | added | 0xfffe | just looked up diode matrix and found this wintergroundfairlands.com/2013/10/… very helpful | |
| Apr 19, 2023 at 20:56 | answer | added | Cristobol Polychronopolis | timeline score: 5 | |
| Apr 19, 2023 at 20:51 | comment | added | Dave Tweed | You can actually purchase a kit for building a 555 from discrete components. There's even one for a complete 6502 CPU! But an EPROM depends on a special device -- the floating-gate MOSFET -- that is not available in discrete form. When building from discrete parts, a diode matrix usually serves as a ROM. | |
| Apr 19, 2023 at 20:47 | comment | added | 0xfffe | understood! thanks. just for my learning, as to how an EPROM works, any schematics I could look at? was able to find some for the 555 timer and it helped | |
| Apr 19, 2023 at 20:41 | comment | added | greybeard | It is possible to build a wheel oneself. It is impossible to build an infrastructure for production and use of wheeled vehicles all by oneself. Be sure to have goals formed (and kept record of) before investing a significant amount of time. A 555 may be instructive, a sizeable PROM boring, the exact mechanisms of EPROMs - well - ambitious. | |
| Apr 19, 2023 at 20:38 | comment | added | misk94555 | 555 timer can be built from discrete components (and it would be a good exercise). Building an EPROM from discrete components doesn't make sense to me. | |
| Apr 19, 2023 at 20:37 | history | edited | 0xfffe |
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| S Apr 19, 2023 at 20:32 | review | First questions | |||
| Apr 19, 2023 at 21:03 | |||||
| S Apr 19, 2023 at 20:32 | history | asked | 0xfffe | CC BY-SA 4.0 |