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1、工作(zuo)任務(wu)書
2、電路原理圖
3、元件清單
4、電(dian)路分(fen)析(xi)
一、定額(e)感應計(ji)數器的功能簡(jian)介
1、按鍵功能:S1----啟動,S2----電源,S3----復位(wei),S4----設定加,S5---電機反轉(zhuan),
S6----保存設置(zhi),S7----設定減,S8----電(dian)機正轉,S9----開始/暫停(ting)計數。
2、接上+9V直流電(dian)(dian)源,打(da)開開關;電(dian)(dian)源指示(shi)燈(deng)LED4點(dian)亮,蜂鳴器(qi)長叫(jiao)一聲(sheng),數碼顯示(shi)管點(dian)亮,并顯示(shi)為“0000”。
3、按下(xia)啟動(dong)鍵(jian),LED1被點(dian)亮(liang)。開始計數(shu)(shu)數(shu)(shu)量(liang)設(she)定,按"S4"時,數(shu)(shu)碼(ma)管(guan)DS1前兩(liang)位(wei)顯(xian)示(shi)的數(shu)(shu)字(zi)遞(di)(di)增;按"S7"時,前兩(liang)位(wei)數(shu)(shu)碼(ma)管(guan)DS1顯(xian)示(shi)的數(shu)(shu)字(zi)遞(di)(di)減。按下(xia)"S5"鍵(jian)設(she)定電(dian)(dian)機(ji)(ji)為反轉(zhuan),按下(xia)"S8"鍵(jian)設(she)定電(dian)(dian)機(ji)(ji)為正轉(zhuan)。計數(shu)(shu)數(shu)(shu)量(liang)設(she)定完成后(hou)(hou)按"S6"鍵(jian)保存,LED2點(dian)亮(liang)。再按下(xia)"S9"鍵(jian)開始工作LED3被點(dian)亮(liang),物(wu)體(ti)通過光電(dian)(dian)二(er)極管(guan)IR2和光電(dian)(dian)三極管(guan)IR1間(jian)隙,數(shu)(shu)碼(ma)管(guan)DS1后(hou)(hou)兩(liang)位(wei)顯(xian)示(shi)的數(shu)(shu)字(zi)開始計數(shu)(shu),電(dian)(dian)機(ji)(ji)轉(zhuan)動(dong)。當計數(shu)(shu)次數(shu)(shu)達到額定值,電(dian)(dian)機(ji)(ji)停止轉(zhuan)動(dong),數(shu)(shu)碼(ma)管(guan)DS1后(hou)(hou)兩(liang)位(wei)數(shu)(shu)字(zi)歸零(ling)。另外在(zai)在(zai)運行過程中按下(xia)“S9”鍵(jian)可暫停計數(shu)(shu)。
二、相關元器(qi)件介紹
1、2輸入端四與非門(men)74HC002
輸(shu)入(ru)端四與(yu)非門(men)74HC00功能及真值表(biao)
管腳位 | SYMBOL 符號(hao) | NAME AND FUNCTION名稱及功能 |
1, 4, 9, 12 | 1A to 4A | Data Inputs數據(ju)輸入 |
2, 5, 10, 13 | 1B to 4B | Data Inputs數據(ju)輸(shu)入 |
3, 6, 8, 11 | 1Y to 4Y | Data Outputs數據(ju)輸出(chu) |
7 | GND | Ground接(jie)地(0V) |
14 | VCC | Positive Supply Voltage電源電壓 |
A | B | Y |
L | L | H |
L | H | H |
H | L | H |
H | H | L |