数字设计原理与实践第4章答案.doc

第四章作业答案4.7 Write the truth table for each of the following logic functions:（b）F=WX+YZ+XZWXYZF00001000110010000111010010101101101011111000110011101001011111001110101110011110（d）F=AB+BC+CD+CAABCDF00000000100010100111010000101001101011111000110011101011011111000110101110111110（f）F=(A+BCD)(B+C+DE)ABCDEF000001000011000101000111001001001011001101001111010001010011010101010111011000011010011101011110100000100010100100100110101000101010101101101111110000110010110100110110111000111010111100111110（h）F=(A+B)+C)+D)ABCDF000000001000101001100100101010011010111010000100101010110110110001101011101111104.9 Write the canonical sum and product for each of the following logic functions:(a) (b) (c) (d) (e) (f) 4.15 Using Karnaugh maps, find a minimal sum-of products expression for each of the following logic functions. Indicate the distinguished 1-cells in each map.(a) (b) WXYZ00011110 0011 01111 111 1011ABC00011110 0111 11ABC00011110 011 111(c) (d) WXYZ00011110 0011 011 111111 1011WXYZ00011110 0011 0111 1111 1011(e) (f) ABCD00011110 0011 01 1111 10114.17 Find the complete sum for the logic functions in drill 4.15(d) and (e).4.15 (d)的完全和：4.15 (e)的完全和同4.16 (e)的最简和（minimal sum）。4.18 Using Karnaugh maps, find a minimal sum-of products expression for each of the following logic functions. Indicate the distinguished 1-cells in each map.(a) (b) WXYZ00011110 0011 011d 11dd1 101WXYZ00011110 001d 0111 111d 101或4.19 For each of the following logic expressions, find all of the static hazards in the corresponding two-level AND-OR or OR-AND circuit, and design a hazard-free circuit that realizes the same logic function.（c）static-1 hazard: W,X,Y,Z=00101010,01101110,10011011,11011111。hazard free logic expression: 。（g）static-0 hazard: W,X,Y,Z=00000100, 00000001, 01000101, 01010111, 01000110, 00100110, 11101010。hazard free logic expression: 4.58 Find a minimal sum-of products expression for each of the following logic functions.(a) (b) ABCD00011110 00 011111 111111 10XYZ00011110 01 111114.59 Find a minimal sum-of products expression for each of the following logic functions using a 5-variable map.（a） WXYZ00011110 0011 0111 1111 10WXYZ00011110 00 0111 1111 10V=0 V=14.35 XYF000011101110真值表： , 逻辑电路图略。P1P0Q1Q000011110 00 011 11111 1011 P2Q2=00P1P0Q1Q000011110 001111 011111 111111 101111 P2Q2=01P1P0Q1Q000011110 00 01 11 10 P2Q2=10P1P0Q1Q000011110 00 011 11111 1011 P2Q2=114.554.61 (Hamlet circu