Hi there,
Im currently studying digital logic and im trying to built a circuit for a traffic lights using gates . These gates are built in the ic chips. The problem is that I need the exact chip model in order to purchase it from the shops.
I require 2 EXOR, 1 NAND and 3 NOR gates.As this it the first time im dabbling in digital logic, I would help me a whole lot if someone could suggest me the chip models which i could buy for these gates.
Thanks
Regards, Shamili
On 18/02/2004 Shamili Pandian opined:-
Look up the 74 range of TTL and/or the 4000 range of CMOS devices.
Probably best to stick to the TTL if he's a beginner, IMHO.
Sounds like a problem a friend got in his 3-4 year at university. He had a PLC to program. That is what most of the industry uses because it is easier to change. just a suggestion. good luck with your project
I found a site with all the CMOS chip models.... but there are some chips which are dual 4 input and some which are quad 2 input.... what exactly does this mean?
Dual means two gates, each with four inputs.
Means four gates, each with two inputs.
It rather means that you need a crash course in logic and logic gates. Without some basic understanding it seems your project will be doomed to failure. Start with a good book beginners book on basic logic and digital interfacing.
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