Hey! thanks a bunch lacy for the model code, it should be really
helpfull once I become more proficient with multisim, but for now it
seems I'm a bit over my head. With the PRE-loaded ICs like counters,
555s, adders, registers, and basic transistors etc.., I have no
problem, but creating new components using SPICE is proving more
difficult than I thought. I'm just a first year EE student who got EWB
5.1 for free from my school, and my version of MultiSim 2001 out of my
Intro to Digital Circuits textbook. I know how the 7485 works and have
a pin diagram with logic symbol with the datasheet, but I just couldn't
figure out how to dovetale that into the 'add-component' function. I
think I'll just have to do some research on how all this SPICE stuff
works, or buy the edu. or pro. edition with the 7485 already preloaded
(unless that would be excessivly expensive). If anyone knows of a good
tutorial (at least more in depth than the one that NI provides) that
could lead me step by step through the create-component function, that
would be great.
p.s. I'm working on a project that requires me to build an adjustably
timed four way LED traffic light simulator using fixed function logic,
and in all my preplanning, the 7485 comparator seems like an
unavoidable compontent for the syncronization and timming I have to
achieve.