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Features included : 4 bit data bus , 8 bit address bus , 15 instructions including load and store ( memory direct addressing ) , single operand add , subtract ( register direct addressing ) , jump ( memory direct ) . Any given invocation of this operation may fail ( return false ) spuriously , but repeated invocation when the current value holds the expected value and no other thread is also attempting to set the value will eventually succeed . I already said strategic because the word strategic denotes long-range missiles to beat ( word indistinct ) the enemy . Pre-post data on student attitudes towards civic participation , academic learning , and community service reveal that students in the course who selected the service-learning component were more likely to report ( p = .05 ) a higher satisfaction with the course , a stronger commitment to community service , and a more positive attitude toward civic engagement than the student who selected the course paper option , when controlling for pre-test differences between the groups .