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126 CHAPTER 3 / BACKGROUND FOR DIGITAL DESIGN
(b)
(c)
FIGURE P3.4
(a) Function Z(#) in Fig. P3.3a.
(b) Function G(H) in Problem 3.22.
(c) Function F(H) of Problem 3.23.
3.26 Reduce the following expressions to their simplest form and name the Boolean
laws used in each step. (Note: Follow the procedure of Examples 3.6 in Section
3.12.)
(a) ab(c + b) + ab
(b) (X + Y)(XZ + 7) (Hint: First use the distributive law.)
(c) A + AC +
(d) (x + y)(x
(e) AB + ACD + BC + AC
