BOOLEAN ALGEBRA AND CIKCUIT DESIGN 



297 



'V lead— 



B C D E 



P(B + E') 



(C + D + E) 



i-osiiltin<>; in [K + (' + D][E' + B] which is shown on Fig. oa. It will later 

 be found advantageoii.s, in combining, to include the B' term in the first 

 factor, giving the expression: 



{E -\- B' -^ a + D)(E' + B) shown on Fig. 5b 



"^" lead— 



B C D E 



(C + D' + E') 



hence 



or 



(C + ly + E'){B' + C + D){B + C) 



[C + B{D' + E')\[C' + B' + D] 

 For later ease in combining, this is changed to: 



[C + B{B' + // + E')][C' + B' + D\ 

 shown on Fig. oc. 



(3b) 

 (11a) 



