Hey guys, i need some help. Im trying to create manual UP/DOWN counter using 74ls48(or 47 ir only for simulation in multisim) BCD to seven segment decoder, 74ls192 counter. I want when im pressing for example S1 switch this system would count up and by toggling S2 switch to count down. I have done the count up mechanism, but i dont know how to set all things up to count down. Im really newbie in this, and any of your help would help me a lot ![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
In the scheme i attached im using 74ls90 decade counter to stop when counter get up to 9 and resets it.
P.S. sorry for my bad english and esthetic of scheme.
In the scheme i attached im using 74ls90 decade counter to stop when counter get up to 9 and resets it.
P.S. sorry for my bad english and esthetic of scheme.
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