最新中职数控技术应用专业实用英语授课教案：5.3
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5.disablevt.禁止，中止抑制
6.registern.寄存器
7.globaladj.全局的，总控的
Step III Text
1. Key words
1. interrupt source中断源
2.external interrupt外部中断
3.timer interrupt定时中断
4.serial port interrupt串行中断
3.A police officer has a brother，but the brother doesnot have a brother. How could that be？
4. What goes up and never goes down？
( key: 1.Smiles. Because there’s a mile between the letter “s”.2.Noise.3.The police officer is a lady.4. Age.)
1. set a bit置位
2. clear a bit清零
3. I E外部程序存储器启动
4. EA中断允许寄存器
5. SFR特殊功能寄存器
4. Reading comprehension
1). What is the machine zero point?
2). Who sets a machine zero point for the machine?
Five interrupt sources:two external interrupts(INT0and INT1),
two timer interrupts(Timer0and Timer1),
and the serial port interrupt.
教
学
后
记
教学内容
教学过程
Step 1 Leading-in and Warming-up
1.Each of these interrupt sources can be enabled or disabled by setting or clearing a bit intheSpecial FunctionRegister IE.
通过在特殊功能寄存器IE中置位或清零，可以使每个中断源启用或禁止。
正确顺序：D A C B
2. Pair work: The studentspracticethe dialogue in pairs.
3.对话的第一句应为：Tom, can you tell me how many interrupt sources there are in the 80C51?
3. Pair work: One student spells English wrods, the other tells the Chinese meaning. The students practise in pairs.
4.The teacher explains some words: timer, serial, disable and global.
▲Ask the students to read the text quickly and answer the question: What are the five interrupt resources?
(two external interrupts(INT0and INT1),two timer interrupts(Timer0and Timer1),and the serial port interrupt.)
1. Revision
2. Warming up for the new class.
简述本课内容、要点，导出教学目标。
Step II. Vocabulary study
1. interruptn.打断，中断
2. sourcen.来源，源
3.timern.定时器
4.serialadj.连续的，串行的
课题
Lesson 3InterruptSourcesof 80C51MCU (U5—L3)
授课
日期
年月日第课时
教学
目标
知识目标：掌握中断源的英文标识。
能力目标：提高学生对80C51单片机用英文解释的能力。
素质目标：提高专业素质和英语素质。
教材
分析
本节课内容介绍80C51单片机中断源。其中要重点掌握中断源的英文标识。
第三句应为：Then, what are they?
▲Hand out the exercise materials to the students, let the students do these exercises in groups. At last , the teacher checks the answerstogetherwith the class.
▲The teacher raises some questions and asks students to answer in detail according to thetextto see how muchthey’ve understood.
▲Cope with the difficult points
2.清零_________
3.置位________
4.允许__________
5.禁止_________
6.总控位________
7.中断允许寄存器_______________
(key：1.interrupt source2.clear3.set a bit4.enable5.disable 6. globalbit 7. IE (Interrupt Enable Register) )
▲The teacher picks out the important sentences, and ask the students to practise speaking loudly, clearly and fast.Then choose four students to have a competition,praise the best student.
▲ 1. Exercises on page 167&168 are assigned as homework to be written in the exercise-books.
2. The students read the supplementary material after class and underline the sentences or phrases that they don’t understand.
III.根据汉语写出下列中断源的英文名称。
外部中断0 --- ___________
外部中断1 --- ___________
定时中断0 --- ___________
定时中断1 --- ___________
串行中断--- ______________
(key:1. INT0 2. INT1 3. Timer 0 4. Timer 1 5. serial port interrupt )
3. The students are assigned to preview the new words in Lesson Four.
▲根据实际情况，从A、B、C、D中选择合适的答案：A代表你能很好地完成该任务；B代表你基本上可以完成该任务；C代表你完成该任务有困难；D代表你不能完成该任务。
Step IV . Dialogue
----Tom, can you tell me how many interrupt sources there are inthe80C51?
----There areFive.
----Then, what they are?
----OK. They areINT0, INT1, Timer0, Timer1 and the serial port interrupt.
Step VI Homework
Step VII Self-checklist
Step VIIIReading for fun
1.What’s the longest word in the world?
2.What can pierce(刺透) one’s ears without a hole?
教学
重点
关键词涉及的专业词汇。
教学
难点
生词表和关键词中涉及的专业词汇短语及缩写。
教法
1.Task-based teaching and learning
2.Cooperative learning
课时
1课时大课（90分）
教具
a projector
板
书
设
计
Lesson 3InterruptSourcesof 80C51MCU
set a bit:置位clear a bit:清零
2.IE also contains a global bit,EA, which can disable all of the interrupts at once.
IE包括一个总控制位EA，它可立即禁止所有的中断。
EA是global bit的同位语；which引导的非限制性定语从句说明EA。
▲1.把下列对话重新排列顺序。
A.There areFive.
B.OK. They areINT0, INT1, Timer0, Timer1 and the serial port interrupt.
C.Then, what they are?.
D.Tom, can you tell me how many interrupt sources there are inthe80C51?
5. seta bit置位
6. special function register(SFR)特殊功能寄存器
7. Interrupt enable register (IE)中断允许寄存器
8. global bit总控位
2. Fast reading
3. Careful reading
Match the key phrases
▲1. The teacher reads the whole text.
2. The students read the text themselves.
3.Four individual students read the text: Two of them read the first paragraph and the other two read the second paragraph.
3).What is the origin of the machine coordinate system?
4). Do you know how to set a machine coordinate system？
5.Analysis of difficult points:
6.Reading competition
▲Askthree students to recite the three sentences of the text..
▲1. Ask the students to read the seven words after the teacher.
2. Ask some students to read the words.The teacher corrects their pronunciation when necessary.
Step V Exercisesin class
I.把字母重新排序组成单词
inrrutept ----interrupt
suroce ---Biblioteka Baidusource
etimr---- timer
risegter ---- register
earcl----clear
II.将下面的单词和短语译成英语。
1.中断源______________
▲1. The students have been asked to preview the key words before the class.
2. Check the preview by doing this exercise: match the Chinese terms with its English.
6.registern.寄存器
7.globaladj.全局的，总控的
Step III Text
1. Key words
1. interrupt source中断源
2.external interrupt外部中断
3.timer interrupt定时中断
4.serial port interrupt串行中断
3.A police officer has a brother，but the brother doesnot have a brother. How could that be？
4. What goes up and never goes down？
( key: 1.Smiles. Because there’s a mile between the letter “s”.2.Noise.3.The police officer is a lady.4. Age.)
1. set a bit置位
2. clear a bit清零
3. I E外部程序存储器启动
4. EA中断允许寄存器
5. SFR特殊功能寄存器
4. Reading comprehension
1). What is the machine zero point?
2). Who sets a machine zero point for the machine?
Five interrupt sources:two external interrupts(INT0and INT1),
two timer interrupts(Timer0and Timer1),
and the serial port interrupt.
教
学
后
记
教学内容
教学过程
Step 1 Leading-in and Warming-up
1.Each of these interrupt sources can be enabled or disabled by setting or clearing a bit intheSpecial FunctionRegister IE.
通过在特殊功能寄存器IE中置位或清零，可以使每个中断源启用或禁止。
正确顺序：D A C B
2. Pair work: The studentspracticethe dialogue in pairs.
3.对话的第一句应为：Tom, can you tell me how many interrupt sources there are in the 80C51?
3. Pair work: One student spells English wrods, the other tells the Chinese meaning. The students practise in pairs.
4.The teacher explains some words: timer, serial, disable and global.
▲Ask the students to read the text quickly and answer the question: What are the five interrupt resources?
(two external interrupts(INT0and INT1),two timer interrupts(Timer0and Timer1),and the serial port interrupt.)
1. Revision
2. Warming up for the new class.
简述本课内容、要点，导出教学目标。
Step II. Vocabulary study
1. interruptn.打断，中断
2. sourcen.来源，源
3.timern.定时器
4.serialadj.连续的，串行的
课题
Lesson 3InterruptSourcesof 80C51MCU (U5—L3)
授课
日期
年月日第课时
教学
目标
知识目标：掌握中断源的英文标识。
能力目标：提高学生对80C51单片机用英文解释的能力。
素质目标：提高专业素质和英语素质。
教材
分析
本节课内容介绍80C51单片机中断源。其中要重点掌握中断源的英文标识。
第三句应为：Then, what are they?
▲Hand out the exercise materials to the students, let the students do these exercises in groups. At last , the teacher checks the answerstogetherwith the class.
▲The teacher raises some questions and asks students to answer in detail according to thetextto see how muchthey’ve understood.
▲Cope with the difficult points
2.清零_________
3.置位________
4.允许__________
5.禁止_________
6.总控位________
7.中断允许寄存器_______________
(key：1.interrupt source2.clear3.set a bit4.enable5.disable 6. globalbit 7. IE (Interrupt Enable Register) )
▲The teacher picks out the important sentences, and ask the students to practise speaking loudly, clearly and fast.Then choose four students to have a competition,praise the best student.
▲ 1. Exercises on page 167&168 are assigned as homework to be written in the exercise-books.
2. The students read the supplementary material after class and underline the sentences or phrases that they don’t understand.
III.根据汉语写出下列中断源的英文名称。
外部中断0 --- ___________
外部中断1 --- ___________
定时中断0 --- ___________
定时中断1 --- ___________
串行中断--- ______________
(key:1. INT0 2. INT1 3. Timer 0 4. Timer 1 5. serial port interrupt )
3. The students are assigned to preview the new words in Lesson Four.
▲根据实际情况，从A、B、C、D中选择合适的答案：A代表你能很好地完成该任务；B代表你基本上可以完成该任务；C代表你完成该任务有困难；D代表你不能完成该任务。
Step IV . Dialogue
----Tom, can you tell me how many interrupt sources there are inthe80C51?
----There areFive.
----Then, what they are?
----OK. They areINT0, INT1, Timer0, Timer1 and the serial port interrupt.
Step VI Homework
Step VII Self-checklist
Step VIIIReading for fun
1.What’s the longest word in the world?
2.What can pierce(刺透) one’s ears without a hole?
教学
重点
关键词涉及的专业词汇。
教学
难点
生词表和关键词中涉及的专业词汇短语及缩写。
教法
1.Task-based teaching and learning
2.Cooperative learning
课时
1课时大课（90分）
教具
a projector
板
书
设
计
Lesson 3InterruptSourcesof 80C51MCU
set a bit:置位clear a bit:清零
2.IE also contains a global bit,EA, which can disable all of the interrupts at once.
IE包括一个总控制位EA，它可立即禁止所有的中断。
EA是global bit的同位语；which引导的非限制性定语从句说明EA。
▲1.把下列对话重新排列顺序。
A.There areFive.
B.OK. They areINT0, INT1, Timer0, Timer1 and the serial port interrupt.
C.Then, what they are?.
D.Tom, can you tell me how many interrupt sources there are inthe80C51?
5. seta bit置位
6. special function register(SFR)特殊功能寄存器
7. Interrupt enable register (IE)中断允许寄存器
8. global bit总控位
2. Fast reading
3. Careful reading
Match the key phrases
▲1. The teacher reads the whole text.
2. The students read the text themselves.
3.Four individual students read the text: Two of them read the first paragraph and the other two read the second paragraph.
3).What is the origin of the machine coordinate system?
4). Do you know how to set a machine coordinate system？
5.Analysis of difficult points:
6.Reading competition
▲Askthree students to recite the three sentences of the text..
▲1. Ask the students to read the seven words after the teacher.
2. Ask some students to read the words.The teacher corrects their pronunciation when necessary.
Step V Exercisesin class
I.把字母重新排序组成单词
inrrutept ----interrupt
suroce ---Biblioteka Baidusource
etimr---- timer
risegter ---- register
earcl----clear
II.将下面的单词和短语译成英语。
1.中断源______________
▲1. The students have been asked to preview the key words before the class.
2. Check the preview by doing this exercise: match the Chinese terms with its English.