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1、第一章数制与编码1.1自测练习1.1.1、模拟量数字量1.1.2、(b)1.1.3、(c)1.1.4、(a)是数字量,(b)(c)(d)是模拟量1.2自测练习1.2.1.21.2.2.比特bit1.2.3.101.2.4.二进制1.2.5.十进制1.2.6.(a)1.2.7.(b)1.2.8.(c)1.2.9.(b)1.2.10.(b)1.2.11.(b)1.2.12.(a)1.2.13.(c)1.2.14.(c)1.2.15.(c)1.2.16.10010011.2.17.111.2.18.1100101.2.19.11011.2.20.
2、8进制1.2.21.(a)1.2.22.0,1,2,3,4,5,6,71.2.23.十六进制1.2.24.0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F1.2.25.(b)1.3自测练习1.3.1.1221.3.2.675.521.3.3.011111110.011.3.4.521.3.5.1BD.A81.3.6.1110101111.11101.3.7.38551.3.1.28.3751.3.2.100010.111.3.3.135.6251.3.4.570.11.3.5.120.51.3.6.2659.A1.3自测练习1
3、.4.1.BCDBinarycodeddecimal二—十进制码1.4.2.(a)1.4.3.(b)1.4.4.8421BCD码,4221BCD码,5421BCD1.4.5.(a)1.4.6.011001111001.10001.4.7.111111101.4.8.101010001.4.9.111111011.4.10.61.051.4.11.01011001.011101011.4.12.余3码1.4.13.XS31.4.14.XS31.4.15.1000.10111.4.16.1001100000111.4.17.521.4.18
4、.110101.4.19.0101111.4.20.(b)1.4.21.ASCII1.4.22.(a)1.4.23.ASCIIAmericanStandardCodeforInformationInterchange美国信息交换标准码EBCDICExtendedBinaryCodedDecimalInterchangeCode扩展二-十进制交换吗1.4.24.10010111.4.25.ASCII1.4.26.(b)1.4.27.(b)1.4.28.110111011.4.29.-1131.4.30.+231.4.31.-231.4.32.
5、-861.5自测练习1.5.1略1.5.2110111011.5.3010001011.5.411100110补码形式1.5.5011111011.5.610001000补码形式1.5.711100010补码形式习题1.1(a)(d)是数字量,(b)(c)是模拟量,用数字表时(e)是数字量,用模拟表时(e)是模拟量1.2(a)7,(b)31,(c)127,(d)511,(e)40951.3(a),(b),(c)(d)1.4(a),(b),(c)(d)1.5,,,1.6(a)11110,(b)100110,(c)110010,(d)10111
6、.7(a)1001010110000,(b)10010111111.8110102=2610,1011.0112=11.37510,57.6438=71.81835937510,76.EB16=118.91796875101.91101010010012=65118=D4916,0.100112=0.468=0.9816,1011111.011012=137.328=5F.68161.10168=1410,1728=12210,61.538=49.671875,126.748=86.9375101.112A16=4210=1010102=5
7、28,B2F16=286310=1011001011112=54578,D3.E16=211.87510=11010011.11102=323.78,1C3.F916=451.9726562510=111000011.111110012=703.76281.12(a)E,(b)2E,(c)1B3,(d)3491.13(a)22,(b)110,(c)1053,(d)20631.14(a)4094,(b)1386,(c)492821.15(a)23,(b)440,(c)27771.16198610=111110000102=0001100110
8、0001108421BCD,67.31110=1000011.010012=01100111.0011000100018421BCD,1.183410=1.0010112=000