uint10 测试

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单片机实验——利用中断控制LED

单片机实验——利用中断控制LED

单片机实验——利用中断控制LED本实验利用中断控制单片机的GPIO口控制LED的亮灭,达到了在不同的时间间隔下实现LED的闪烁、呼吸等效果。

本实验可以让初学者更好地理解与掌握单片机的中断和GPIO 控制。

一、实验器材准备1. STC12C5A16S2单片机开发板2. LED灯3. 1KΩ电阻4. 杜邦线二、实验原理本实验中,我们需要利用单片机的GPIO口控制LED灯的亮灭。

其中,单片机的GPIO 口需要设置为输出模式,即控制LED灯亮灭的电平。

在运行中,通过改变电平状态来控制LED的亮灭。

而中断控制则是为了实现不同的效果,比如在不同的时间间隔下闪烁、呼吸等。

中断是指硬件或软件的外部事件,它会打断当前正在执行的程序,转为执行中断程序。

在单片机编程中,我们可以采取中断方式实现不同的操作。

三、实验步骤1. 首先,连接电路。

将LED作为单片机GPIO控制的输出口,同时连接一个1KΩ的电阻,如下图:2. 打开Keil软件,新建工程,导入STC12C5A16S2头文件。

3. 在代码中,首先需要定义GPIO的引脚,接下来进行中断初始化设置。

4. 编写闪烁程序,实现LED在不同时间间隔下闪烁,如下:```cvoid Led_Flash(void){Led_ON(); //LED灯亮Delay(500); //延时等待500msLed_OFF(); //LED灯灭Delay(500); //延时等待500ms}```5. 编写呼吸程序,实现LED在不同时间间隔下进行呼吸灯效果。

```cvoid Led_Breath(void){uint8 i;uint16 j;for (i = 0; i < 10; i++) //变量i控制灯的亮度{for (j = 0; j < 2000; j++) //变量j控制每次延时等待的时间{Led_ON();Delay_us(i * 20);Led_OFF();Delay_us((9 - i) * 20);}}}```6. 编写中断控制程序,通过定时器中断来实现LED的不同效果。

Uint 10练习题

Uint 10练习题

Uint 10练习题二、用所给词的适当形式填空。

(5×2分=10分)6.Therearealotof____(potato)inthesupermarket.7.I'dlike____(have)acupoftea.8.There____(be)somebeefinthebag.9.Therestauranthasfour____(special).10.I'dlikesome____(vegetable)inthebeefnoodles.Unit10 I'dlikesomenoodles.第一课时(SectionA1a~1c)三、根据句意及汉语提示写单词。

(5×3分=15分)11.Peopleinthenorthlikeeating____(面条).12.August16thisa____(特殊的)dayformyparents.13.—Areyougoingtoherbirthdayparty?—I'mnotsure____(还).14.Heoftenhas___(土豆)forhissupper.15.The____(牛肉)issodeliciousandIlikeitverymuch.四、用所给词的适当形式填空。

(5×4分=20分)16.Herearealotof____(potato)inthesupermarket.17.Whatwouldyoulike____(have)forbreakfast?18.Hewantssome____(carrot).19.Hewantssome____(tomato)noodles.20.Whatkindof____(noodle)wouldyoulike?Unit10 I'dlikesomenoodles.第一课时(SectionA1a~1c)五、单项选择。

(5×4分=20分)21.He____somepotatoesforlunch.A.wouldlike B.would C.like D.want22.—Isdinnerready,Mom?—No,not____.A.yetB.alreadyC.stillD.ready23.—Whatwouldyoulike?—I'dlikesome____.A.beefandcarrotnoodlesB.beefandcarrotsnoodlesC.noodleswithbeefandcarrotD.noodleswithbeefsandcarrots24.The____herearedelicious.A.noodleB.soupC.specialsD.beef25.—Wouldyoulikesome____?—Oh,yes,justalittle.A.applesB.carrotsC.muttonD.cabbagesUnit10 I'dlikesomenoodles.第一课时(SectionA1a~1c)六、句型转换。

c语言中uint类型

c语言中uint类型

C语言中的uint类型在C语言中,uint是一种无符号整数类型,它表示非负整数。

uint的全称是unsigned int,它的取值范围是0到4294967295,占用4个字节(32位)。

与之对应的有带符号整数类型int,它的取值范围是-2147483648到2147483647。

uint类型的定义在C语言中,可以使用关键字unsigned来定义uint类型的变量。

例如:unsigned int num;这样就定义了一个名为num的uint类型变量。

uint类型的特点1.无符号:uint类型是无符号的,即它只能表示非负整数。

由于没有符号位,所以uint类型的取值范围比int类型更大。

2.高位优先:在存储uint类型的变量时,高位字节存储在高地址,低位字节存储在低地址。

这种存储方式称为高位优先(Big Endian)。

3.位运算:由于uint类型是以二进制形式存储的,所以可以使用位运算来对uint类型的变量进行操作。

常见的位运算包括与、或、异或、取反等。

uint类型的使用赋值和输出可以使用赋值运算符将一个非负整数赋值给uint类型的变量,例如:unsigned int num = 10;也可以使用printf函数输出uint类型的变量,需要使用%u作为格式控制符,例如:printf("%u\n", num);运算符uint类型支持常见的算术运算符和比较运算符,例如加法、减法、乘法、除法、取模等。

需要注意的是,对于uint类型的变量进行减法运算时,要确保结果仍然是非负的。

unsigned int a = 10;unsigned int b = 5;unsigned int sum = a + b;unsigned int difference = a - b;unsigned int product = a * b;unsigned int quotient = a / b;unsigned int remainder = a % b;位运算uint类型支持常见的位运算,包括与、或、异或、取反等。

高教版中职英语(拓展模块)Uint 10《Career Planning》ppt课件1

高教版中职英语(拓展模块)Uint 10《Career Planning》ppt课件1

and so on
等等
They are interested in art,music,dance and so on . 他们对艺术、音乐、舞蹈等感兴趣。
“出现”“来到某处”“显露出来”
show up show-showed-showed/shown
Eg:She must have gone out early ,for she had not shown up for breakfast .
vary
V. 有差异,会变化
various
People vary much in their ideas . 人们在想法上差异很大。 That sort of thing varies from person to person . 那种事情因人而异。
同位语从句
这种差别可以用这样的事实解释:个子大 的人的皮肤与其体重相比较要比个子小的 的人少一些。 This different might be explained by the fact [that big people have less skin compared to weight than do small people.] 句中由that引导的从句,说明前面名词fact 的内容,是同位语从句。
remain
① 停留 与stay同义,可以换用 ② 作连系动词, “继续保持,仍然处于某种 状态” Eg:Please remain here till I return . 请呆到我回来。 If you don’t eat you’ll just have to remain hungry .
2. highly 主要表示很高的程度,除修饰动词(如 speak, praise, think of等)外,还通常用于修饰分 词或形容词(尤其是那些由动词派生而来的形容词, 有时相当于 very 或 much)。如: He speaks very highly of you. 他十分赞赏你。 It’s a highly amusing film. 那是部很有趣的电影。 The people were highly pleased. 人们都很高兴。 His report is highly scientific. 他的报告是很科学 的。 She is a highly educated woman. 她是受过高等 教育的女人。

广州版小学三年级下uint10-how-many-people-are-in-your-family

广州版小学三年级下uint10-how-many-people-are-in-your-family
Step 6: Homework
4/5
广州版小学三年级下 uint10-how-many-people-are-in-your-family
1、听读课文,签字。 2、制作一张家谱。 3、把人物称呼用英文单词标 出来
1. Copy the new words in activity one for多少口人?
_____ ______ people ___
_____ in your family ? 2 我没有任何叔叔,兄弟和 姐妹.
I ____
______
___uncles or brothers and
sisters 3 我有一个朋友.
I _____ _____ friend . 4 你有一个大家庭吗?
Step2:Presentation
Can you tell me who are they? He is my grandpa she is my grandma she is my mother He is my father He is my young brother And me 利用热身环节,让学生复习部分家 庭成员的词汇和第三人称男女主语 的表达。
Step3:Practice
利用家庭成员关系图训练句型: Who’s this? This is my….
Step3:Practice
Tony’s Family Who are they?
在沿着这一话题的基础上, 将上个知识点和该课进行衔
Vocabulary 1.My father’s father is my _____________. 2. My father’s mother is my
Let’s play a game

Uint 10 精讲知识点

Uint 10 精讲知识点

Uint 10 By the time I got outside, the bus had already left第一课时Section A一:词汇1. lock (动词)锁上lock(名词)门锁2. realize(动词)实现realistic(形容词)现实的3. quick(形容词)快的quickly(副词)快速地4. break(动词)打破broken(形容词)坏的5. luck(名词)幸运luckily(副词)幸运地短语归纳1.on time 准时2.run off 迅速离开,跑掉3.by the time 到···的时候4.break down 坏掉了5.give sb a ride 搭某人一程二:句型归纳1.等到我们出门的时候,公共汽车已经开走了。

By the time I got outside, the bus had already left.2.当我到家的时候,我意识到我把钥匙忘在包里了。

When I got home, I realized I had left my keys in the backpack.3.我的闹钟没有响。

My alarm clock didn’t go off.4.我快速地洗了澡。

I took a quick shower.5.当我赶到学校的时候,最后一次铃声正在响。

When I got to school, the final bell was ringing.三:语法过去完成时的用法⑴过去完成时表示动作发生的时间是过去的过去。

⑵①过去完成时的标志:介词by+过去的时间。

②含时间状语从句的复合句中。

若主从句的动作都发生在过去,先发生的动作用过去完成时态,后发生的动作用一般过去时态。

③在宾语从句或间接引语中。

当主句使用的是过去的时态,直接引语或单独使用的句子本身使用的是一般过去时或现在完成时,在改成间接引语或宾语从句时,一般要使用过去完成时。

现代大学英语精读2(第二版)翻译Unit1-10、Unit12

现代大学英语精读2(第二版)翻译Unit1-10、Unit12
was clean air, clean water, a lot of fish, crabs and eels in the rivers, lakes, and ponds; and a lot of flowers, trees and birds in the fields. 9. Give absolute power to any individual or any par cular group of people, and that person or group is sure to abuse that power because, just as Lord Acton says, "Power corrupts, and absolute power corrupts absolutely."
5. Somehow this tune sounds very familiar, but I can't recall what it is. In any case, it is a Russian folk song.
6. Besides the usual weekend housework, I also have a whole pile of homework to do tomorrow. It's really terrible.
3. We are proud of our accomplishments, and we have reason to be. But we must never
become arrogant. Otherwise we will lose our friends. 4. Informa on is now easily available. An average computer can store the informa on of a small

10us的延时函数 -回复

10us的延时函数 -回复

10us的延时函数-回复10us的延时函数是指延时10微秒的函数。

在嵌入式系统或实时应用程序开发中,经常会用到延时函数来控制程序的执行时间。

延时函数的原理是通过循环执行空操作来消耗一定的时间,从而实现延时的效果。

在本文中,我将详细解释如何编写一个可靠的10us延时函数,并探讨其在实际应用中的一些注意事项。

编写一个具有10us延时功能的函数需要考虑硬件和软件两个方面。

首先,我们需要了解计时器的工作原理以及如何使用它来测量时间。

其次,我们需要使用合适的算法来控制循环次数,使其在大多数情况下能够以10us 的精度进行延时。

在大多数嵌入式系统中,都会内置有一个或多个计时器。

计时器可以通过准确地计量硬件时钟的脉冲数来测量时间。

我们可以利用计时器提供的时钟频率和计数器的位宽,计算出每个时钟周期的时间长度。

例如,如果计时器的时钟频率为10MHz,即每个时钟周期为0.1us,那么我们可以通过计算得到10us对应的计数值为100。

基于以上信息,我们可以开始编写延时函数。

首先,我们需要在函数的输入参数中指定需要延时的微秒数。

然后,我们将使用计时器来测量时间,并循环执行空操作,直到达到指定的延时时间。

下面是一个基本的实现示例:cvoid Delay_10us(uint32_t us){uint32_t count = us * 10; 计算延时的计数值获取当前计时器的值uint32_t start_count = Get_Current_Count();循环直到达到指定的计数值while((Get_Current_Count() - start_count) < count);}在这个示例中,我们假设已经定义了一个用于获取当前计时器值的函数`Get_Current_Count()`。

由于不同的嵌入式系统的计时器实现方式可能不同,所以具体的实现细节会有所差异。

在实际使用中,我们需要根据所用的嵌入式平台来编写相应的获取当前计时器值的函数。

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Unit 10Part Two V ocabulary and Grammar: 50%I. Choose the best answer.20%1. What ______ do we need to make a cake?A ingredientB ingredientsC an ingredientD some ingredients2. Tell the boy ________ near the fire.A not goB not to goC do n’t goD doesn’t go3. ________ a class meeting this Friday.A There will hasB There will haveB There is going to be D There is going to have4. You don’t look _______. You should go to the hospital immediately.A goodB wonderfulC greatD well5. --Shall we go out for flying a kite?--_________.A Yes, we willB We like toC Oh, that is a good ideaD Yes, thank you6. ________ you _________ from Tom these days?A Have…hearB Have…heardC Are…hearingD Will…hear7. Tom, would you like to ____ something about yourself?A sayB tellC speakD talk8. Is there _________ interesting in today’s newspaper?A someB anyC somethingD anything9. Thank you for __________ me to your birthday party.A inviteB invitationC invitedD inviting10. --Peter has never been to America.-- ________.A So do IB Neither has IC So have ID Neither have I11. I got up late, ____ I didn’t catch the early bus.A soB becauseC butD or12. ____ a cake, you need some eggs, some sugar, some butter and some flour.A. To makeB. Make C MakingD Made13. She _______ hamburgers.A needn’t to buyB needn’tC doesn’t need buyD doesn’t need to buy14. I’d ______ four pieces of bread for lunch.A like buyB rather to buyC like buyingD rather buy15. I am looking forward to ________ France.A visitB visitingC a visitD will visit16. Mrs White ____ in this school for 10 years.A teachesB taught C. has taughtD had taught17. Many Chinese people eat spring rolls ___ Chinese New Year.A atB inC onD for18. A: We haven’t got much fruit.B: Shall I go and buy _____?A anyB someC manyD one19. A: I’m sorry. I’ve got something to do on Sunday.B: Oh, _________!A what a pityB thanks a lotC never do it againD sorry to hear it 20. I bought a birthday present ____ Mark.A toB forC withD byII. Complete the sentences with the given words in their proper forms.10%1. Put the dough on a ____ tray. (bake)2. After the earthquake, a lot of people became ________ .(home)3. ________, pour the mixture into a baking tray.(three)4. The students are _______ a New Year party.(plan)5. Listen! The music sounds really __________ .(wonderful)6.I’ve taken many ____ of my pet dog. (photo)7.I passed the exam ____.(final)8.We have enough ______ .(battery)9.Put the milk and suger together and make the _____.(mix)10. Today is Mike’s ____ birthday.(nine)III. Rewrite the sentences as required:20%1.Shall we play basketball after school?(同意句改写)_____ don’t we ____ basketball after school?2. We need to buy some bread and chicken wings.(改为否定句)We ____ _____ to buy _____ bread and chicken wings.3. We should bake the cake for 20 minutes.( 划线提问)_____ _____ should we bake the cake?4. I will see Jack on Saturday afternoon at my flat.(划线提问)_____ and _____ will you see Jack?5. I’d rather stay at home. (改为否定句)I’d ____ ____ stay at home.6.We had to wait for the next train. ( 划线提问)____ ____ we _____ to ______?7.I don’t know how I can bake a cake. (同意句改写)I don’t know _____ _____ bake a cake.8.I’d like a piece of pizza.(改为一般疑问句)____ _______ _______a piece of pizza?Part Three Reading and Writing (30%)I. Complete the following dialogue with proper sentences in the box:5%A. How many friends are you going to invite?B. And could you please clean the living room?C. Can I have a birthday party?D. What are you going to eat?E. Could I borrow some money?F. Come in and have a seat.A: Mum. Next Sunday is my birthday. 1 .B: Certainly! Where is the party?A: I think at home.B: 2A: Maybe 16.B : So many. people. 3A: I don't know. But I think We're going to cook ourselves(我们自己).B: OK. You should buy some fruits and vegetables from the shop.A : All right. 4B : Sure. 5A: Yes, OK. Mum.I. Reading comprehension:15%(A)Mr. and Mrs. Bell are very forgetful. For example, Mr. Bell sometimes goes to his office for work on Sunday morning, for he thinks it is Monday. And Mrs. Bell sometimes forgets to cook supper for the family.One summer they planned to fly to New York for theirholidays. They got to the airport only ten minutes before the plane took off. So time was short. But suddenly Mrs. Bell said she must tell Alice, their daughter, not to forget to lock the front door when she went to school. As Alice was then at school, they couldn't tell her about it by telephone. So they hurried to the post office. Mrs. Bell wrote a short note to Alice while Mr. Bell bought a stamp and an envelope. Soon the note was ready. They put the stamp on the envelope in a hurry and dropped it in the letter box, but suddenly Mrs. Bell began to cry. The short note was still in her hand. She had put the plane tickets in the envelope.True or false:5%1. Mr. Bell sometimes goes to work on Sunday for he thinks it is Monday.2. One summer they planned to fly to New York to see their parents.3. Mrs. Bell wanted to tell her daughter not to lock the front door when she went out.4. In a hurry they forgot to put the stamp on the envelope and dropped the letter in the letter box.5. Suddenly Mr. Bell began to cry because he had put the plane tickets in the envelope.(B)A man took a pair of shoes to a shoe repair shop and said to the shoemaker, "I'd like you to repair these shoes for me, please." "Certainly, sir," the shoemaker said."When will they be ready?" the man asked."I'm a bit busy, but they'll be ready for you on Thursday. " he said.That's fine," the man said, and left the shop.The next morning he received a letter, offering him a job in another country. Within 24 hours he was on an airplane to his new job.Twenty years passed and he returned to his hometown.He remembered his shoes." They were a good pair of shoes," he thought. "I wonder if the shoemaker is still there and still has them. I'll go and see. He was pleased to see that the shoemaker was still in the same shop , although he was an old man by now."Good morning ," he said to him. "Twenty years ago, I brought in a pair of shoes to be repaired. Do you think you've still got them?""Name?" the old shoemaker asked."Smith," the man said."I'll go and see. They may be out back.The shoemaker went out to the back of his shop--and a few minutes later returned, carrying the pair of shoes."Here we are," he said. "One pair of brown shoes to be repaired. I'm a bit busy now, but they'll probably be ready on Thursday. "1. Why did the man go to a shoemaker?A. They were old friends.B. The man wanted the shoemaker to make him a new pair of shoes.C. The man wanted the shoemaker to repair a pair of shoes.D. The man had a very old pair of boots to repair,2. Why didn't the man return to the shoe repair shop on Thursday?A. He forgot.B. He went overseas(在国外).C. He was too busy.D. He knew the shoes would not be ready.3. The man stayed away from his hometown _______.A. until ThursdayB. until the next morningC. for about twenty yearsD. for a few days4. What did the man do when he returned to his hometown?A. He looked for a new job.B. he bought a new pair of shoes.C. He visited all his friends.D. He returned tothe shoemaker to get his shoes.5. The man finally found that ________.A. his shoes had been repairedB. the shoemaker had lost his shoesC. the shoemaker had already repaired the shoesD. the shoes hadn't been repaired yet(C)The male(雄性) birds have brighter colours than the female(雌性). To understand why this is so, we must understand why birds have colours.All we can is to try to find a few rules about the most birds. One rule is that birds with brighter colours spend most of their time in tree-tops, in the air, or on the water. Birds with duller colours live mostly on or near the ground.Another rule is that the upper-parts of birds are darker than under-parts. Some scientists think that birds can protect themselves easily in this way.The colours can protect the male and female birds. Especially for the female, the duller colours can because she has to sit on the eggs and hatch them.Another reason for the brighter colours of the male birds is that they help draw interests of the female during the breeding season. This is usually the time when the male birds colours are brightest of all. Even among birds, they can be loved at first sight.1. Which birds have bright colours, female birds or male birds?_________________________________________________ ____________.2. According to passage, where do the birds with brighter colours live?The birds whith brighter colours spend most their time_________________.3. Why does the female have duller colours?Because duller colours can_______________________________________.4. When do the male birds have the brightest colours?5. What does the passage mainly tell us?It is about _____________________________________________________ .III. Cloze Test: 5%I am not bad at sports. But I could 1 be a star. When I play football 2 basketball, everyone moves faster than me.At school, how I wish my teammates had said, " Hey, Charlie, nice shot. Man!" but they seldom did.But I soon found a way to make myself 3 . I asked my parents to buy " cool" drinks and 4 for the team.Kids as my age wanted "cool" sports drinks. They had to be cold, and they had to have interesting flavours and names, such as Electric Lime. They also liked potato chips rather than "boring" apples.My dad is a kind man. He bought us "cool" drinks and snacks.I never got to be a star, but it turned me 5 a very popular teammate. They would say, "Hey, Charlie , nice drinks, man!"1. A. always B. usually C. oftenD. never2. A. or B. and C. soD. but3. A. convenient B. clever C. popularD. cheap4. A. balls B. clothes C. snacksD. videos5. A. into B. at C. fromD. withIV. Read the passage and fill in the blanks with Drollerwords:5%A train stopped at a small station. A man looked out of the window and s 1 a woman selling cakes. People from the train were buying them. The man also wanted to buy a cake because he felt a little h 2 But the woman was standing far away from the train. It was raining and the man didn't want to go out o 3 the train.Suddenly he saw a boy walking on the platform, n 4 far from him. "Come here, boy!" the man said "Do you know how much money we must pay for a cake?""Five cents," the boy answered.The man gave the boy ten cents and asked him to buy two cakes. "One for me, and one for you. " he told the boy.A few minutes later, the boy came back. He was e 5 a cake. He gave the man five cents and said "I'm sorry, there is only one cake. "V. Writing: 5%Write at least 50 words on the topic “My birthday party”。

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