1.   The program searches for information using Boolean logic.

2.   The use of Boolean logic when using the microcomputer for information retrieval was highlighted by the SIR project and can be difficult for pupils.

3.   Both philosophers and computer programmers use Boolean logic, Myrick explained, though philosophers are more likely to call it Aristotelian logic.

4.   Digital circuits behave according to the principles of Boolean logic, with the additional real-world effects of propagation delays and device loading.

5.   Most use some form of Boolean logic to help narrow a search.