The personal website of Scott W Harden

Prime Number Generator Schematics

Here's a schematic of the prime number calculator I'm working on. Last night I finished wiring all 12 shift registers for the primary display, so now it's time to start working on software. Notice that we have a lot of pins free still. This will be advantageous if I decide to go crazy adding extraneous functionality, such as fancy displays (LCD?, 7-segment LEDs?, VFD?, all 3?!) or creative input systems (how about a numerical keypad?).

After feeling the stink of paying almost $15 for 100' of yellow, 24 gauge, solid-core wire from DigiKey I was relieved (and a little embarrassed) to find I could score 1,000' of yellow, 24 gauge, threaded wire for $10 at Skycraft! Anyway, here's the current schematic.

Markdown source code last modified on January 18th, 2021
---
title: Prime Number Generator Schematics
date: 2009-06-30 12:25:14
---

# Prime Number Generator Schematics

__Here's a schematic of the prime number calculator I'm working on.__ Last night I finished wiring all 12 shift registers for the primary display, so now it's time to start working on software. Notice that we have a lot of pins free still. This will be advantageous if I decide to go crazy adding extraneous functionality, such as fancy displays (LCD?, 7-segment LEDs?, VFD?, all 3?!) or creative input systems (how about a numerical keypad?).

<div class="text-center">

[![](text5130_thumb.jpg)](text5130.png)

</div>

After feeling the stink of paying almost $15 for 100' of yellow, 24 gauge, solid-core wire from DigiKey I was relieved (and a little embarrassed) to find I could score 1,000' of yellow, 24 gauge, threaded wire for $10 at Skycraft! Anyway, here's the current schematic.