(10012 = -810 + 110 = -110)

Should be

(10012 = -810 + 110 = -710)

 

Thank you, Sonoma_Dog.

http://www.allaboutcircuits.com/vol_4/chpt_2/3.html

About half-way down the page...

 

Thanks Sonoma_Dog for pointing out this error. It has been fixed in the copy at ibiblio, and has been credited to Sonoma_Dog@allaboutcircuits.com in the Contributors list, Appendix A-2.