Nov
11th
2019
In which Techie writes a late-night techblog about CPU registers · 7:42am Nov 11th, 2019
SO.
The 74ls273 is a pretty neat device. 8-bit flipflops with an output enable and a clear contents signal. All in all it's pretty nice. Only problem? No input enable. You throw a hunk of data at it and it'll swallow it up even if you don't want it to.
The solution? the 74ls173. The '173 has both input and output enable pins, plus a clear contents pin. The only problem? One, it's only 4 bits, so I've gotta double them up.
