單片機(jī)練習(xí)


1.單片機(jī)工作需要的編譯平臺是(A)
A.?IAR
B.?KEIL
C.?DEV
D.?ISP
2.本門課程使用到的單片機(jī)型號是(C)
A.?STC89C51
B.?ATC51
C.?CC2530
D.?STM32
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3.?CC2530單片機(jī)的優(yōu)點(diǎn)是(c)
A.?處理能力強(qiáng)
B.?保密性好
C.?具有無限傳輸功能
D.?通信速度很快
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4.?CC2530下載器的名稱是(B)
A.?ISP
B.?Debug
C.?Uart
D.?DMA
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5.?承接CC2530單片機(jī)的功能增強(qiáng)的單片機(jī)是(D)
A.?AT
B.?STC
C.?FPGA
D.?STM32
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6.?CC2530F256單片機(jī)的供電電壓是(A)
A.?3.3V
B.?5V
C.?3.6V
D.?12V
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7.?本實(shí)驗(yàn)?zāi)K單片機(jī)外圍LED電路的驅(qū)動電平是(A)
A.?高電平
B.?低電平
C.?邏輯電平
D.?TTL電平
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8.?本實(shí)驗(yàn)?zāi)K單片機(jī)有幾個(gè)IO工作組是(C)
A.?1個(gè)
B.?2個(gè)
C.?3個(gè)
D.?4個(gè)
9.?設(shè)置單片機(jī)輸出P1引腳功能為IO的寄存器是(B)
A.?P0SEL
B.?P1SEL
C.?P0DIR
D.?P1DIR
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10.?設(shè)置單片機(jī)輸出P1引腳IO輸出方向的寄存器是(D)
A.?P0SEL
B.?P1SEL
C.?P0DIR
D.?P1DIR
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11.?P1SEL的賦值技巧是(A)
A.?0接1斷
B.?1接0斷
C.?0接0斷
D.?1接1斷
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12.?P1DIR的賦值技巧是(A)
A.?0入1出
B.?1入0出
C.?00為入
D.?11為出
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13.?P1INP的賦值技巧是(A)
A.?0拉1平
B.?1拉0平
C.?00上拉
D.?11上拉
14.IF((SW==0)&&(LED0==0))的功能釋義是(A)
A.?按鍵按下,LED0滅燈
B.?按鍵按下,LED0亮燈
C.?按鍵彈起,且LED0滅燈
D.?按鍵彈起,且LED0亮燈
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15.while(!SW)的功能釋義是(C)
A. 按鍵按下,程序停留
B. 按鍵彈起,程序停留
C. 按鍵按下,程序通過
D. 按鍵彈起,程序通過
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16.?最能體現(xiàn)單片機(jī)中斷應(yīng)用的優(yōu)點(diǎn)是(A)
A.?對突發(fā)任務(wù),能及時(shí)響應(yīng),并實(shí)時(shí)處理
B.?節(jié)省整機(jī)的功耗
C.?提高芯片的使用效率
D.?爭取芯片空閑
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17.?基于51內(nèi)核的CC2530共有幾個(gè)中斷源)(B)
A.?16
B.?18
C.?19
D.?21
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18.?CC2530講所有中斷源劃分成幾個(gè)中斷優(yōu)先級組(A)
A.?6
B.?7
C.?8
D.?9
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19.?端口組中斷使能寄存器是(A)
A.?IEN2
B.?WDTIE
C.?P1IE
D.?RFIE
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20.?外部中斷的中斷向量是(C)
A.?0X6B
B.?0X6F
C.?0X7B
D.?0X7F
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21.?CC2530單片機(jī)有幾個(gè)定時(shí)器(A)
A.?5
B.?6
C.?7
D.?8
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22.?定時(shí)計(jì)數(shù)的中斷向量為(A)
A.?0X4B
B.?0X4C
C.?0X4D
D.?0X4E
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23.?具有16位計(jì)數(shù)能力的定時(shí)器是(A)
A.?定時(shí)器1
B.?定時(shí)器2
C.?定時(shí)器3
D.?定時(shí)器4
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24.?定時(shí)計(jì)數(shù)器初值存放的寄存器是(C)
A.?TXAA
B.?TXEE
C.?TXCC
D.?TXDD
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25.?定時(shí)計(jì)數(shù)器的三只工作模式是(ABC)
A.?自由運(yùn)行
B.?模式運(yùn)行
C.?正/倒計(jì)數(shù)運(yùn)行
D.?節(jié)能運(yùn)行
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26.?CC2530單片機(jī)的16位定時(shí)器有幾個(gè)(A)
A.?1
B.?2
C.?3
D.?4
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27.?具有8位計(jì)數(shù)能力的定時(shí)器計(jì)數(shù)容量上限是(A)
A.?256
B.?512
C.?586
D.?1024
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28.?當(dāng)定時(shí)器1采用16MHzRC振蕩器時(shí),最大定時(shí)時(shí)長為(B)
A.?252.28ms
B.?524.28ms
C.?536.28ms
D.?546.28ms
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29.?設(shè)置定時(shí)計(jì)數(shù)的分頻系數(shù)寄存器是(A)
A.?T1CTL
B.?T1IFG
C.?T1IEN
D.?T1CC0
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30.?使能定時(shí)器1的溢出中斷語句是(C)
A.?TXAA = 1
B.?T1IEN = 1
C.?T10VFIM = 1
D.?T1CC0 = 1
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31.?CC2530單片機(jī)的16位定時(shí)器是哪個(gè)(A)
A.?T1
B.?T2
C.?T3
D.?T4
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32.?手動清除定時(shí)器1溢出中斷標(biāo)志位程序是(A)
A.?T1STAT &= ~0x20
B.?T1STAT |= ~0x20
C.?T1STAT &= ~0x02
D.?T1STAT |= ~0x02
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33.?設(shè)置定時(shí)器分頻系數(shù)為128(最大)的程序語句是(B)
A.?T1CTL &=0x0C
B.?T1CTL |=0x0C
C.?T1CTL |=0xC0
D.?T1CTL &=0xC0
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34.?設(shè)置定時(shí)器工作在正/倒計(jì)數(shù)模式程序語句是(A)
A.?T1CTL |= 0x03
B.?T1CTL &=0x03
C.?T1CTL |=0x30
D.?T1CTL &=0x30
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35.?若工作模式設(shè)置為模模式,寄存器T1CC0X值應(yīng)為(C)
A.?0xF244
B.?0xF442
C.?0xF424
D.?0xF242
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36.?CC2530單片機(jī)USART的全稱是(A)
A.?串行同異步通信
B.?串行同步通信
C.?串行異步通信
D.?串行通信
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37.?配置UART模式外設(shè)引腳位置的寄存器語句是(B)
A.?U0CSR |= 0x80
B.?PERCFG = 0x00
C.?P0SEL |=0x3C
D.?T1CTL &= 0x0C0
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38.?設(shè)置UART通信的波特率為57600的程序語句是(A)
A.?U0BAUD = 216; ?U0GCR = 10;
B.?U0BAUD = 216; ?U0GCR = 11;
C.?U0BAUD = 126; ?U0GCR = 10;
D.?U0BAUD = 126; ?U0GCR = 11;
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39.?通信電路中,MAX232功能是(D)
A.?消除冗余電平信號干擾
B.?實(shí)現(xiàn)數(shù)據(jù)的可靠傳輸
C.?實(shí)現(xiàn)TTL電平與RS232電平之間的轉(zhuǎn)換
D.?實(shí)現(xiàn)數(shù)據(jù)的有效通信
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40異步程序通信一次傳送一個(gè)幀,其組成主要由(ABCD)
A.?起始位
B.?數(shù)據(jù)位
C.?校驗(yàn)位
D.?停止位
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41.CC2530單片機(jī)USART的分別是(A)
A. P0.2(RX0),P0.3(TX0);P0.4(TX1),P0.5(TX1)
B. P0.2(TX0),P0.3(RX0);P0.4(RX1),P0.5(TX1)
C. P0.2(RX1),P0.3(TX1);P0.4(TX0),P0.5(TX0)
D. P0.2(TX1),P0.3(RX1);P0.4(RX0),P0.5(TX0)
42.設(shè)置串口工作方式的配置語句是(C)
A. U0CSR |= 0x80
B.?PERCFG = 0x00
C.?U0UCR |=0x80
D.?P0SEL |=0x3C
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43.開啟UART中斷功能的語句是(B)
A. U0CSR |= 0x80
B. UTX0IF = 0
C. P0SEL|=0x3C
D. T1CTL &=0xC0
44.清除串口中斷標(biāo)識的程序語句是(A)
A. T1STAT &= ~0x01
B. PSELISA|=0x3C
C. U0CSR |=0x80
D. U0BAUD = 123; U0GCR = 11;
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45.清除數(shù)據(jù)發(fā)送完畢中斷標(biāo)識的程序語句是()不是c
A. U0CSR |=0x80
B. EA = 1
C. UTX0IF = 0
D. UTXOIF = 1
46.CC2530單片機(jī)串口初始化波特率應(yīng)取得晶振語句為(A)
A. CLKCONCMD &=~0x80
B. CLKCONCMD &=~0x10
C. CLKCONCMD &=~0x08
D. CLKCONCMD &=~0x01
47.串口接收中斷標(biāo)識位URX0IF意義是(C)
A. 為0x10時(shí),接收到數(shù)據(jù)
B. 為0x01時(shí),接收到數(shù)據(jù)
C. 為1時(shí),接收到數(shù)據(jù)
D. 為0時(shí),接收到數(shù)據(jù)
48.UART接收緩存中的字節(jié)數(shù)是(B)
A. 15
B. 16
C. 17
D. 18
49.緩存接收字節(jié)是寄存器是(A)
A. U0DBUF
B. U0TXIF
C. U0RXIF
D. U0TIF
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50.清除數(shù)據(jù)發(fā)送完畢中斷標(biāo)識的程序語句是(C)
A. U0CSR|= 0x80
B. EA = 1
C. UTX0IF = 0
D. UTX0IF = 1
51.CC2530單片機(jī)配置P0為模擬引腳功能的語句為(a)
A. APCFG |= 0x01
B. APCFG |= 0x02
C. APCFG |=0x10
D. APCFG |=0x20
52.清除ADC中斷標(biāo)識的程序語句是(c)
A. IEIF = 0
B. IEIF = 1
C.?ADCIF = 0
D. ADCIF =1
53.設(shè)置參考電壓采用AVDD5引腳(即3.3V)的語句是(b)
A. ADCCON3 |=0x01
B. ADCCON3 |=0x80
C. ADCCON3 |=0x08
D. ADCCON3 |=0x10
54.等待ADC轉(zhuǎn)換完成的程序語句是()
A. while(!ADCIF)
B. while(ADCIF)
C. while(ADCIF == 0)
D. while(ADCIF == 1)
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55.ADC數(shù)據(jù)儲存寄存器的數(shù)據(jù)提取程序語句是()
A. value = ADCL >> 5; ?value |=((int)ADCH << 3)
B. value = ADCL >>4; ?value |=((int)ADCH << 4)
B.?value =ADCL >> 2; ?value |=((int)ADCH << 6)
D. value = ADCL >> 3; ?value |=((int)ADCH << 5)
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56.CC2530單片機(jī)中等待系統(tǒng)時(shí)鐘源(主時(shí)鐘源)穩(wěn)定語句為(A)
A. while(clkconsta != clkconcmd)
B. while(clkconsta = clkconcmd)
C. while(clkconcmd != clkconsta)
D. while(clkconcmd = clkconcsta)
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57.等待ADC轉(zhuǎn)化結(jié)束語句為(C)
A. while((ADCCON1 ?& ?0x08))
B. while((!ADCCON1 ?& ?0x08))
C. while((!ADCCON1 ?& ?0x80))
D. while((ADCCON1 ?& ?0x80))
58.設(shè)置晶振(先于串口初始化,會影響波特率)的程序語句(B)
A. SystemClockSourceSelect(RC_8MHz)
B. SystemClockSourceSelect(RC_16MHz)
C. while(clkconsta != clkconcmd)
D. while(clkconsta = clkconcmd)
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59.?選擇內(nèi)部參考電壓;12位分辨率;對片內(nèi)溫度傳感器采樣語句是(A)
A. ADCCON3 = (0x3E)
B. UartInit()
C. while(!ADCCON1 & 0x80)
D. while (ADCIF = = 1)
60.選擇ADC的啟動模式為手動語句是(C)
A. value = ADCL >>5;value |=((int)ADCH<<3);
B. value = ADCL >>4;value |=((int)ADCH<<4);
C. ADCCON1 |= 0x30;
C.?ADCCON1 |= 0x03;
61.CC2530單片機(jī)中看門狗控制寄存器是(A)
A. WDCTL
B. WDTCL
C. WDTLC
D. WDCLT
62.設(shè)置看門狗模式,時(shí)間間隔為1S的語句為(C)
A. while((ADCCON1 & 0x08));
B.WDCTL = 0x01;
C. WDCTL = 0x00;
D. while((ADCCON1 & 0x80));
63.給看門狗喂狗信號的語句為(B)
A. WDCTL |= 0x0A;WDCTL |= 0x05;
B. WDCTL |= 0xA0;WDCTL |= 0x50;
C. WDCTL |= 0x0A;WDCTL |= 0x50;
D. WDCTL |= 0xA0;WDCTL |= 0x05;
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64.等待晶振振動穩(wěn)定的語句是(A)
A. while(clkconsta != clkconcmd);
B. while(clkconsta = clkconcmd);
C. while((ADCCON1 & 0x80));
D. while(ADCIF==1);
65.設(shè)置晶振值的函數(shù)語句是(C)
A. value = ADCL >>5;value |=((int)ADCH<<3);
B. value = ADCL >>4;value |=((int)ADCH<<4);
C. SystemClockSourceSelect(RC_16MHz);
D. CLKCONCMD &= 0x80;
66.CC2530單片機(jī)中看門狗驅(qū) 動所啟用的定時(shí)器是(A)
A. 16M
B. 32M
C. 32.768K
D. 64K
67.設(shè)置看門狗模式,中斷使能的語句為(C)
A. while((ADCCON1 & 0x08));
B. WDCTL = 0x01;
C. IEN2 |= (0x01 << 5);
D. while((ADCCON1 & 0x80));
68.清零看門狗定時(shí)器中斷標(biāo)志的語句為(B)
A. WDCTL |= 0x0A;WDCTL |= 0x05; ??
B. IRCON2 &= ~0x10; ??
C. IRCON2 &= ~0x01;
D. WDCTL |= 0xA0;WDCTL |= 0x05;
69.配置看門狗寄存器,工作在定時(shí)器模式(A)
A. WDCTL |= (0x03 << 2) ;
B. while(clkconsta = clkconcmd);
C. WDCTL |= (0x01 << 2) ;
D. while(ADCIF==1)
70.看門狗定時(shí)器(定時(shí)器模式)中斷向量是(C)
A. value = ADCL >>5;value |=((int)ADCH<<3);
B. value = ADCL >>4;value |=((int)ADCH<<4);
C. WDT_VECTOR ?
D. WDG_VECTOR

