【導(dǎo)讀】種頻率可調(diào)方波發(fā)生器。通過鍵盤鍵入隨機(jī)頻率，使用七段數(shù)碼管顯示，每。單片機(jī)對各個(gè)鍵位進(jìn)行掃描，確定鍵位的輸入，然后數(shù)碼管顯示。設(shè)計(jì)一種頻率范圍限定且可調(diào)的方波發(fā)生器，志在產(chǎn)生特定頻率的方波?；驹O(shè)備是基于PHILIPSAT89C51單片機(jī)，外圍設(shè)備采用的是4. 若干電阻，電源電池。在這種顯示方式下，每一個(gè)LED數(shù)碼管顯示器都需要一。個(gè)8位的輸出口進(jìn)行控制。靜態(tài)顯示主要的優(yōu)點(diǎn)是顯示穩(wěn)定，在發(fā)光二極管導(dǎo)通電流一定的。子程序，這樣既節(jié)約了CPU的時(shí)間，又提高了CPU的工作效率。較多，每個(gè)LED數(shù)碼管需要獨(dú)占8條輸出線。流有關(guān)，也與點(diǎn)亮?xí)r間和間隔時(shí)間的比例有關(guān)。若顯示器的位數(shù)不大于8位，則顯示器的公共端只需一個(gè)8位I/O口進(jìn)行動(dòng)態(tài)。但在控制系統(tǒng)運(yùn)行過程中，要保證顯示器正常顯。率，同時(shí)顯示亮度較靜態(tài)顯示器低。行線與列線短路，此時(shí)該行線的電平將由被短路的列線電平所決定。逐行逐列地檢查鍵盤狀態(tài)的過程稱為對鍵盤的掃描。鍵盤掃描一次，并將鍵值讀入。

　　

【正文】 made provisions, so as to realize the connection of Party discipline and state law. 4, reflect Wind building and anticorruption struggle of the latest achievements. rule the party39。s eighteen years implement the spirit of the central provisions of the eight, against the requirements of the four winds and transformation for disciplinary provisions, reflecting the style construction is always on the road, not a gust of wind. In the fight against corruption out of new problems, increase the trading rights, the use of authority relatives profit and other disciplinary terms. Prominent discipline of the masses, the new against the interests of the masses and ignore the demands of the masses and other disciplinary terms and make provisions of the disposition and the destruction of the party39。s close ties with the masses. Discipline to protect the party39。s purpose. 8 of these regulations, a total of three series, Chapter 15, 178, more than 24000 words, after the revision of the regulations a total of 3 series, Chapter 11, 133, 17000 words, divided into general and special provisions and Supplementary Provisions Part 3. Among them, add, delete, modify the provisions of the proportion of up to nearly 90%. 1, the general general is divided into five chapters. The first chapter to the regulations of the guiding ideology, principles and scope of application of the provisions, highlight the strengthening of the party constitution consciousness, maintenance the authority of Party Constitution, increase the party anizations and Party members must abide by the party constitution, Yan Centralized centralized, would examine at all levels of the amended provisions implementing and maintaining Party discipline, and consciously accept the party discipline, exemplary pliance with national laws and regulations. The second chapter of discipline concept, disciplinary action types and effects of the regulations, will be a serious warning from the original a year for a year and a half。 increase the Party Congress representative, by leaving the party above (including leave probation) punishment, the party anization should be terminated its representative qualification provisions. The third chapter of the disciplinary rules of use prescribed in the discipline rectifying process, non convergence, not close hand classified as severely or heavier punishment. Discipline straighten At least eighteen years of five years, these five years is to pay close attention to the provisions of the central eight implementation and anti four winds . The fourth chapter on suspicion of illegal party disciplinary distinguish five different conditions, with special provisions were made provisions, to achieve effective convergence of Party and country 9 method. rule the provisions of Article 27, Party anizations in the disciplinary review found that party members have mitted embezzlement, bribery, dereliction of duty dereliction of duty and other criminal law act is suspected of mitting a crime shall give cancel party posts, probation or expelled from the party. The second is Regulations Article 28 the provisions of Party anizations in the disciplinary review But found that party members are stipulated in the criminal law, although not involved in a crime shall be investigated for Party discipline and responsibility should be depending on the specific circumstances shall be given a warning until expelled punishment. This situation and a difference is that the former regulation behavior has been suspected of a crime, the feeling is quite strict, and the latter for the behavior not involving crime, only the objective performance of the provisions of the criminal code of behavior, but the plot is a crime to slightly. Regulations the 29 provisions, Party anizations in the discipline review found that party members and other illegal behavior, affect the party39。s image, the damage to the party, the state and the people39。s interests, we should depend on the situation Seriousness given disciplinary action. The loss of Party members, seriously damaging the party39。s image of behavior, should be given expelled from the party. At this article is party member is in violation of the criminal law outside the other illegal acts, such as violates the public security administration punishment law, customs law, financial laws and regulations behavior. The fourth is cases Article 32 stipulates, minor party members and the circumstances of the crime, the people39。s Procuratorate shall make a decision not to initiate a prosecution, or the people39。s court shall make a conviction and exempted from criminal punishment shall be given within the party is removed from his post, probation or expelled from the party. Party members and crime, sheets were fined in accordance with For acts。 the principal Ordinance amended the provisions of the preceding paragraph. This is the new content, in order to achieve Ji method effective convergence. Five is the thirty third article 10 of the provisions, the Party member due to an intentional crime is sentenced to criminal law (including probation) sheets or additional deprivation of political rights。 due to negligence crime and was sentenced to three years or more (excluding three years) a penalty, shall give expelled punishment. Due to negligence crime is convicted and sentenced to three years (including three years) in prison or be sentenced to public surveillance, detention, shall in general be expelled from the party. For the individual may not be expelled from the party, should control Approval. This is followed and retained the original Regulations the provisions of punishment party authorization rules and report to a level party anizations. For is party members with c