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programming AT89C51 - how to add extra I/Qports?

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göktek20

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programming AT89C51

hi everyone,
I wanna design a project which is about 8051 mikroprocessor.in this system how can I add extra I/Q ports with using latch and/or buffer.I use at89c51. I simulate it with proteus. can you help me about pin connections...
 

Re: programming AT89C51

The selection of MC depends your project/need so please post a brief description about your project.
 

programming AT89C51

I use latch(74ls373) and buffer(74ls540). cause ı want extra ınput ports for AT89C51. the question in here how can I add external I/Q ports to the system which is based 8051.
 

programming AT89C51

thanks I'm going to look...

Added after 4 hours 25 minutes:

I will expand I/O ports via lacth or buffer not shift register or other components...
 

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