数字电路第四版、五章习题答案.doc

第四章习题 题4.1 题4.2 区别：基本RS触发器为电平直接触发 同步RS触发器为时钟触发器 题4.3 题4.4 题4.5 题4.6 题4.7（原图应为T触发器，编辑将输入端错写为J，请更正） 题4.8 题4.9 题4.10 题4.11 第五章习题 题5.1 状态方程： 题5.2 状态方程： 题5.3 输出方程： 状态方程： 题5.4 状态方程： 题5.5（原题电路图有问题，当初检查时未发现，FF1触发器只有J输入端，没有接入K输入端，K输入端与J输入端连接一致应接） 状态方程： 说明： 1 X输入为0时系统保持原状态不变 2 X输入为1时系统为三进制计数器，并可以自启动 题5.6 状态方程： 题5.7 状态方程： 题5.8 状态方程：CP2改为下降沿触发 题5.9 驱动方程： K2 去掉Q1则不能自启动 题5.10 输出方程： 驱动方程：D0和D2反了 题5.11 编码后最简状态图： 输出方程： 驱动方程： 题5.12 输出方程： 驱动方程： 题5.13 a 四进制 b 三进制 c 八进制 d 九进制 题5.14 a 十二进制 b 十三进制 题5.15 1 2 3 4 题5.16 1 2 3 题5.17 1 2 3 题5.18 1 2 3 4 题5.19 1 静态RAM的存储单元为触发器，存储的信息只要不断电即可长期保持； 2 动态RAM采用MOS管电容存储信息，信息保持时间短且读出为破坏性操作，需要及时重新写入；即使不进行读出操作，也需要定时重写，否则信息容易丢失。 题5.20 图略 题5.21 图略 office, branch offices jurisdiction , risk management, marketing management sector through supervision and inspection found problems, should be assigned the investigators are corrected in a timely manner. 27th the fifth chapter penalty under any of the following acts, then the relevant provisions to punish the investigators, according to the Bank. To constitute a crime shall be investigated for criminal responsibility: A on the business that are not involved in the investigation, issued a survey. B customer credit information are not thorough verification. Iii to participate in credit customer survey is not in place, customers and data is incomplete, untrue; he knows bear a counterfeited clients issuing credit. D does not provide for due diligence of credit business, pre-loan investigation form, concealing facts or providing false information or should be found in a normal investigation failed to discover the risk factors, lead to the review and approval policy errors, loan risk. Five on loan guarantees of survey not in place, not by provides on arrived, and pledge real for field verification, and assessment, and identification and registration, not according to provides on guarantor of guarantees qualification and guarantees capacity for survey verified, led to guara