logic chip?

[zhaniko93]

hello. I have such a situation:
I have 4 free microcontroller (pic) pins and want to drive 10 Leds so:
if this binary number (4 digit which is output from micro) is:
1 (0001) then turn L1 on
2 (0010) then turn L1 and L2 on
3 (0011) then turn L1, L2 and L3 on
4 (0100) then turn L1, L2 L3 and L4 on
5 (0101) then turn L1, L2 L3, L4 and L5 on
.....................................
10 (1010) then turn L1, L2 L3, L4 , L5, L6, L7, L8, L9 and L10 on

I cand find the appropriate 7400 chip... can any1 help me?

 

[Pommie]

Try 74LS154.

Mike.

 

[ericgibbs]

Try 74LS154.

Mike.

Gday Mike,
A LS154 is a 1 of 16 outputs active.

Hope you have dried out OK.

 

[MikeMl]

I dont think there is one. If I were doing this, I would use serial in, parallel out shift registers (two of them to get 10 bits). That only requires to two pins on the PIC, DataIn and Clock...