Chip Hollis said:
Can someone tell me how to wire a 7490 decade counter to
divide by two? I can't seem to find a schematic anywhere.
You can download the manufacturers specification sheet from rswww.com.
You'll have to register, but that's free. Just follow the products to the
7490, and click on the tech info tab. You'll get a choice of half a dozen
manufacturers data sheets.
I use RS this way for getting info all the time. They are also an excellent
source of parts and, although located in the UK, will ship transatlantic at
very low cost.
There's also a very good explanation of the whole thing in "The Art of
Electronics, by Horowitz and Hill, which should be available in the
technical reference section of any central library close to you.
If all else fails, e-mail me and I'll scan the relevant pages and send them
to you.
John