Truth Table & 0 1 0 0 0 1 0 1 Finding Out if the First Bit Is Turned On, Behind the Scenes 10101010 -- 170 & 00000001 -- 1 -------- 00000000 -- 0 Finding Out if the Second Bit is Turned On, Using T-SQL 18> SELECT 19> 170 & 2 20> GO ----------- 2 (1 rows affected)