答案:将[tex=4.429x1.214]3tNwBTpndYabK1YLQRLeDg==[/tex]接至74LS154的[tex=5.286x1.214]0kP3DAWzJ9hNkWPnBrJcfB0/H7tzYN7yZJjz9eBh0V4=[/tex]以后,在输出[tex=3.714x1.286]3Um4g3PPkkeHO/tAYQ/yGO5lmEfQAtX1v5+ZWaYJxuDHnAmrZKQEilh35aMFmhUU[/tex]就得到了四变量[tex=4.429x1.214]3tNwBTpndYabK1YLQRLeDg==[/tex]的全部16个最小项的反相输出[tex=4.214x1.286]5lv8l/8wgx+oVWhtkRBEvAovEFD/RK1V2iG9ir0UxiF1bwlR+6Sf53IjHTLSj1YF[/tex]将给定的逻辑式化为用[tex=4.214x1.286]5lv8l/8wgx+oVWhtkRBEvAovEFD/RK1V2iG9ir0UxiF1bwlR+6Sf53IjHTLSj1YF[/tex]表达的形式,得到[tex=24.143x1.429]z9pmoNSUDrLq9y99SsiErl4zJYoY+1YkJyHBCZOhYaXbzXYf0W2yWxhW0E0nfQziwLtQZWCM9hgNl51vKocnERWy/TaJXRG1nK9XvT5RII2izDqDqfATBw62WKfhretRrX4twSkvy81F0JLTilyk6gSD7nt4E+Zyd2QfaPa0uWvqiJGtzCG//qyBBgR7WmjSv2mlWV46Evrn9yUeUEvf6Q==[/tex][tex=17.214x1.286]rOX4MURppbatEsRfDdEWrqIwBU1zC1GGKFexPhix3S6Sw+jbyoo2/kadLiEK1bAN76oRngtw+VRvzPnRZVl0hbE6iTiVeXo8lhLkKsfYZiwuP0xSjqxtXP7TbnuezZyl57e4bQ84LdfhyNSZFBpjmzccO1LU9K7/Fj2NJzAbDWI=[/tex][tex=5.929x1.286]5jIV9T1jULS6dJ6YGnap8zdz+01AWp6KY27nrvm5yFOgyBicbqqGccbASNQd9ZpvBZTKtNBOXZsEFLSX8hDgI4Yxf/ICNIjq0kBDQw5na9Q=[/tex],[tex=22.0x1.429]L9VuK7l4a0aZ+yrnGDx62Gh3RmROdx1HxPG86hWz9YeQWhM+6SxXFFYq+PM8yEU147XFKeX9W0UfmeqE0YF6IYmhwLeK3wQnW0s94CMZFngO7dqorQs4g0JTdQHMv9Er[/tex][tex=19.5x1.286]qmBcD3nFai7ezJVGyZpjJIcVYd/Pqbw74PizrNhSugK0IEcBZY4PggWzxuxPareiJK81iEKwCkH2TCrZJonU/KhXjNK46M4PCoGeB8JoOAsfIfO58M8HCJ6uoejokEVsVQLRmEPvNWmAB0NaySyjWHE+wtb05u3dq6V4fnGIyw8=[/tex][tex=7.286x1.286]TK9qHX8YJOXj/nz89OZcn4ej7WqVh1xI93HYAANWIxB6PnLUm72WpNjQHtOHhwY5ExFOGCyNMrxUFn0EFGcydMENDEr6Ba5WRlwiJDSv5JHGadjKf+k9JxS9LQGBfne9[/tex],[tex=25.5x1.429]p8WLlWSuRf0HCwq6HEBXTga3GwfuRAIdVfozJiuWmRaVIhP+w2seNuRddZNr007FqOcxN6lh90AzhvG6JULMCkUEyqZEu8p7sCpWtp1n9B6VGTUqbq0sk1k+ikt/hPLzUcVIRF7p1ezxnFS/PSquQDAnymShjafA3iYIObqAb4wTUV40XewSEHv8K2al1AY7[/tex][tex=17.143x1.286]cy/O8uIgDTRXK0hScYSDt3kavGdmqX9f9Hohftk13FDxXJoY9/RLQnUad0Q1uJtRI7y5SniAYo0FOz7/q9Rw0xPfdVUx/sXl4LBmybd4g8n17avhQ/vgKCtd+u5DRC7R4/MFqFfkJIfMKK6+dVKEtg==[/tex][tex=6.214x1.286]mDfLe+LDze8joa1KeICq01sJdb4nx5em5mOMY4xPvD4GNMmg9g9Ni9jwPOYvIEOnfM/UtV8Ctq8nT7ee1FlysWWwV44+lyD/IwNkXinoKUjc8K/WFqUAIIAJL0rnEXaN[/tex]根据上式画得的电路图如图A4.13所示[img=371x282]179650e26d7023d.png[/img]