數位電子乙級03,數位電子鐘
數位電子老蔡網頁
數位電子乙級01四位數多工顯示器
https://mytsaii.blogspot.com/2019/04/01.html
數位電子乙級02鍵盤掃瞄裝置
https://mytsaii.blogspot.com/2019/04/02.html
數位電子乙級03數位電子鐘
https://mytsaii.blogspot.com/2019/04/03.html
數位電子乙級03
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CPLD功能方塊
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max2plus安裝、quartus2安裝,畫電路到燒錄完成說明BY老蔡
https://mytsaii.blogspot.com/2019/04/01.html
數位電子乙級02鍵盤掃瞄裝置
https://mytsaii.blogspot.com/2019/04/02.html
數位電子乙級03數位電子鐘
https://mytsaii.blogspot.com/2019/04/03.html
數位電子乙級03
試題3數位電子鐘6hrs
SW1 電源開關
NL1 AC110V
NL2 DC5V
Hour 小時,Minute分
H1
|
H0
|
M1
|
M0
|
H1D,H1C,H1B,H1A
|
H0D,H0C,H0B,H0A
|
M1D,M1C,M1B,M1A
|
M0D,M0C,M0B,M0A
|
當電源剛開時
H1, H0, M1, M0
0, 0, 0, 0
CLOCK 1Hz in 秒輸入
S1 停止計時(on) 時鐘(off)
S2 調整小時(0~23)
S3 調整分鐘(0~59)
23:59→00:00
P20(in), S1, off = 0V, on = 5V 電源開關
P21(in), S2, off = 0V, on = 5V 調整小時
P5(in), S3, 0ff = 0V, on = 5V 調整分鐘
P22(in) 秒輸入
P7(in) 分輸入
P19(in) 時輸入
P6(out) 秒歸0
P8(out) 分輸出
P4(out) 冒號
P11(out) H1B
P12(out) H1A
P14(out) H0D
P15(out) H0C
P16(out) H0B
P17(out) H0A
H1
|
H0
|
||||||
H1D
|
H1C
|
H1B
|
H1A
|
H0D
|
H0C
|
H0B
|
H0A
|
P11
|
P12
|
P14
|
P15
|
P16
|
P17
|
電源
P2 Vcc(DC5V)
P1 GND
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CPLD功能方塊
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