7.1 I/O接口扩展概述 7.2 MCS-51与可编程并行I/O芯片8255A的接口 7.3 显示器键盘接口 7.2.2 工作方式选择控制字及C口置位/复位控制字 7.2.3 8255A的三种工作方式 7.2.4 MCS-51单片机和8255A的接口 7.3 用74LSTTL电路扩展并行I/O口 11.1 MCS-51与DAC的接口 11.2 MCS-51与ADC的接口 11.3.MCS-51与ADC0809的接口

A套试题会计学部分(10分) 1、简述借贷记帐法有什么特点。(3分) 2、根据甲企业在某月发生的部分业务编制会计分录。(7分) (1)王军从外地出差归来,报销差旅费1250元,原预借1400元。(1分) (2)为生产甲A产品购入A材料,不含税价款计10000元,增值税税率为17%,材料已验收入库,价款已付。(2分) (3)销售完工的甲A产品,含税价款计46800元,增值税税率为17%,价款尚未收到。对方开来一张期限半年,年利率10%的商业承况汇票抵付上述价款。(3分)

一.单项选择题(将答案填入下表中,每小题2分,共20分) 题号12345678910 答案 1.命题公式为P⑧(PQ() A.重言式B.可满足式C.矛盾式D.等值式 2.设集合A={1,a},则P(A)=()

概率论与数理统计模拟试题(1) 填空题 1.已知事件AB满足P(AB)=P(AB),且P(A)=P,则B)=() 2.设P(A=04,P(A∪B)=0.7,则(1)若A、B互不相容时,P(B)=() (2)若A、B相互独立时,P(B)=() 3.在1中随机取两个数,则事件“两数之和小于65的概率为()

6-2相量法的基本知识 一、复数 (1)代数形式A=a+jba—实部b—虚部 a=R[A]=R[a+jb]R取实部 b=m=mla+jm取虚部 一个复数可以表示在复平面上

1.已知A,B两个事件满足条件P(AB)=P(AB)且P(A)=p,则(B)=94数一考研题 2.设工厂A和工厂B的产品的次品率分别为1和2%,现从由A和B 的产品分别占60%和40%的一批产品中随机抽取一件,发现是次品,则该次品属A生产的概率是_9数一考研题

There are many concepts that are used in fuzzy logic that sometimes become useful when studying fuzzy control. The following problems introduce some of the more popular fuzzy logic oncepts that were not treated earlier in the chapter or were treated only briefly (a)The complement(\not )of a fuzzy set with a membership function has a membership function given by A(x)=1-u(x). Sketch the complement of the fuzzy set shown in Figure 2.6 on page 30 (b)There are other ways to def ine the\triangular norm\for representing

9.1.1(单项选择)三阶行列式:-142的值为() A.6B.5C.8D.12 (难度:A;水平:a) (-200) 9.1.2(单项选择)矩阵A=310叫做( )。 041 A.单位矩阵B.对角方阵C.上三角阵D.下三角阵(难度:B;水平:b)-121

一、单项选择题(每小题1分,共10分) 1.a2.c3.c4.a5.6.a7.c8.c9.c10.a 二、多项选择题(每小题2分,共20分) 1. ABC 2. ABCD 3. ABD 4. ABC 5. BCDE 6. BD 7.AC 8. ABC 9. ABCD 10. BCD

Explain or explore something, (e. g, process of make a machine, the causes of a natural or ocial phenomenon, the planning of a project, or a solution of a problem) Description mainly deal with appearance and feelings, and narration with events and experiences, unlike the two, the exposition mainly deals with relationships as well as processes