Q:

How do you enter binary numbers in OS X Calculator?

I'm using Calculator on Mac OS X 10.7.5.  I switched it to the "Programmer" view, and the upper right only has "8", "10", and "16" buttons, which means it only allows you to enter octal, decimal, and hexadecimal numbers.  How can I enter binary numbers?

A:

Click "show binary" button, this shows in your screenshot, and then you can click the "bit" you want to set.

