74HC595 shift register

So i noticed that the microchip's that i used earlier (CD4017) were not the actual Shift register, so no i found the real one's, by using them you can control as much LEDs as you want, because if you want to use more than one of these chips (74HC595) they can connect with each other, thus saving the PIC pins.

And here is a video of one 74HC595 in action:

Here is an example of 2 x 74HC595 working together:

74HC595 is a very popular amongst LED matrix developing.