This is an old revision of the document!
There are six bitwise logic operators. These operators work at bit-level and deal with the binary forms of numbers:
To show these, let's take the numbers 60 (0011 1100) and 90 (0101 1010):
Here is a diagram for hooking up a button:
A possible manual test with an LED:
The main function of the button is to change the direction of the counting of the LED lights. In vcc1, like vcc0, you program the LED lights to count up to a certain number. In the vcc1, the LED lights count up to 64, and by pressing the button, the LED lights will count backwards from 63.