about 16f84 (c)

[do_not_panic]

hi i have questions about 16f84
i have 10 keys. when i press anyone this signal will appear on lcd and also one led will turn on .
can it be possible ?
is there any program about it? how can i find this program and schema? thanks

 

[Nigel Goodwin]

hi i have questions about 16f84
i have 10 keys. when i press anyone this signal will appear on lcd and also one led will turn on .
can it be possible ?
is there any program about it? how can i find this program and schema? thanks

It's possible, but you would need extra hardware as the 16F84 doesn't have enough I/O pins.

 

[StupidDum]

eh. that is the most common use of microcontroller
interfacing with lcd and keypad
the schematic is simple. just connect the lcd, keypad pins to pic I/O pins

 

[do_not_panic]

Do you know how to achieve this problem? Shoul i use other pics? for example what?

May you give me any links about it? thanks

 

[Nigel Goodwin]

Do you know how to achieve this problem? Shoul i use other pics? for example what?

May you give me any links about it? thanks

Have a look at my tutorials at http://www.winpicprog.co.uk which do all that you need, but to get them all at the same time you will need a larger PIC or extra hardware.

 

[do_not_panic]

ok.very thanks if anybody can find any link about it pls send me.

 

[stef]

I would suggest using a hex keypad encoder for the keypad eg 74ls922 or the like. Use the 8255 port expander to increase the I/O lines of the PIC.

 

[do_not_panic]

very thanks . ıll try it