Electronic circuit paper (memorial daydigital display circuit)
电子线路论文(纪念日数显电路)
This paper consists of the boy with Guo
DOC documents may experience poor browsing on the WAP side. Itis recommended that you first select TXT, or download the sourcefile to the local view.
JIU JIANG UNIVERSITY
Course design of electronic circuit
Title, English title, memorial day digital display circuit,Digital, device, circuit, anniversary, Electronic EngineeringInstitute, communications engineering * * * A0811/** * * * *
* * * * * * * * * * * * * * * * * * * * * *
Department professional name, class number, tutor
June 2010
Course design of electronic circuitpickwant
This design using the most knowledge base of digital electronictechnology, multivibrator composed of NE555 generation ofrectangular pulse, CD4017 decimal counter receives a pulse
signal, latch, decoding drive CD4511 drive digital tube. Theswitching transistor through the lfyback switch in saturation,cut-off (open, close) , fire control and the current pulseon-off.
Key words: digital display, pulse, decode, counter
One
Course design of electronic circuitorderrecord
The first chapter is the significance and purpose of thedesign. . . . . . 3, second chapters, principles, knowledge. . . . . .
3. . . . . . 2. 1, 2. 2, 2. 3, 2.4, 2.5, 2.6, 2.7, third chapters. . . . . .A multivibrator consisting of 3 NE555. . . . . . 4 decimal numberdecoder CD4017. . . . . . 5 1N4148 glass sealed silicon diode. . . . . .5 display decoder CD4511 pin diagram and function. . . . . . 5 LEDdigital tube. . . . . . 6 four 2 INPUT NAND gate CD4011. . . . . . 7. . . . . .The application of EDA technology. . . . . . Seven
3. 1 Protel drawing fundamentals. . . . . . 73. 2 simulation softwareproteus7.5. . . . . . 7. . . . . . The fourth chapter assemblywelding. . . . . . 74. 1 component list. . . . . . 84.2 welding. . . . . . 7,fifth chapter test, debug and test result. . . . . . 8. . . . . . Thesixth chapter is the conclusion. . . . . . 9. . . . . . References. . . . . .Nine
Two
Course design of electronic circuit
The significance and purpose of the design, the significanceand purpose of the first chapter
Memorial Day circuit digital display device is a digitalcountdown display circuit, the anniversary of the date and timeset for today. Now the countdown from August 8, 2008 with 69days, design a circuit repeatedly display more information. Thedisplay methods include: three digital tube, one digital tubedisplay 20088.8 side by side under repeated; the digital tubeplaced in the other two digital tube, the two digital tubedisplay 69 repeatedly, each rhythm represented in forms asfollows: each small square for a time (about one second) , thebox according to the specified content display, where the blanklattice said the rhythm without any display. 20088.8200
88.8. . . . . .
Sixty-nine
Sixty-nine
Sixty-nine
Sixty-nine
Sixty-nine
. . . . . .
Requirements: 1, output DC power supply with green emitting twotube instructions; oscillator output with a red light emittingdiode.2, each"69" display time shall not be less than 4beats,nor more than 6 beats and the beginning of each display "69"must be followed in a digital tube". . . . . . 8.8 "appear behind,must not misplace. "
The second chapter, principle knowledge
2. 1 circuit working principle
NE555 oscillator and its surrounding components to produce arectangular pulse, the input to the CD4017. CD4017 Qo decimalcounting distributor Q9 sequentially outputs a pulse count,including Q0, Q3, Q5, Q7 output by the diode D5, D6, D7, D8 sevenBCD- delivered to the latch / decoding / driver drive digitaltube CD4511, .Q1, Q2 but then, Q4, Q6, Q8, Q9 output by the diodeD4, D3, D2, D1 to the transistorVT, and then the 4 foot VT CD4511collector input to.Q7 output pulse, forming another pathcorresponding to the corresponding pulse elimination R11 litdigital tube decimal point DP, so there is a"20088.8" the otherway. The output of Q9 transmission to 4011 by reverse phasedelayandthenreverse to thebase of atriode, as the conductioncontrol signal. When the high level output, triode, two digitaltube display below the "69" and the number of seconds delay.Three
Course design of electronic circuit
Schematic diagram
R3
100K
R1
470R
U1 R2
2k2
Q1
NPN
7126345
A, B, C, D, LT, BI, LE/STB, 74HC4511
D1
LED
QA, QB, QC, QD, QE, QF, QG
1312111091514
D7 U3
8, 1N4148, Q0, Q 1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, , Q9, CO, 324710156,t wo
U2
Q DC 37
1413
CLK E
R4
56K
D3
1 N4148
D4
1 N4148
D5
1 N4148
VCC
4
D6, D8 1N41481 N4148
Q2
NPN
R
RV1
5 HP
R6
470r
G ND
15 th 6
2 100K
1 510r NE5554017 1N4148
11
TR
R5
Mr.
D9
D10
1 N4148 12 13
U5: D
4011
C1
10u
C2
10N
D2
LED 8 9 6 10 4011 1N4148 4011 4011
U5: C
5
U5: B
4
D11
U5:
1 2 3
C3
4u7
R7
470r
R8
470r
R9
470r
2.2组成的多谐振荡器NE555
组成的多谐振荡器可以用作各种时钟脉冲发生器555,如图所示;图中为脉冲频率可调的矩形脉冲发生器,改变电容C4可获得时
Hostio是一家成立于2006年的国外主机商,提供基于KVM架构的VPS主机,AMD EPYC CPU,NVMe硬盘,1-10Gbps带宽,最低月付5欧元起。商家采用自己的网络AS208258,宿主机采用2 x AMD Epyc 7452 32C/64T 2.3Ghz CPU,16*32GB内存,4个Samsung PM983 NVMe SSD,提供IPv4+IPv6。下面列出几款主机配置信息。...
80vps怎么样?80vps最近新上了香港服务器、美国cn2服务器,以及香港/日本/韩国/美国多ip站群服务器。80vps之前推荐的都是VPS主机内容,其实80VPS也有独立服务器业务,分布在中国香港、欧美、韩国、日本、美国等地区,可选CN2或直连优化线路。如80VPS香港独立服务器最低月付420元,美国CN2 GIA独服月付650元起,中国香港、日本、韩国、美国洛杉矶多IP站群服务器750元/月...
CUBECLOUD(魔方云)成立于2016年,亚太互联网络信息中心(APNIC)会员,全线产品均为完全自营,专业数据灾备冗余,全部产品均为SSD阵列,精品网络CN2(GIA) CU(10099VIP)接入,与当今主流云计算解决方案保持同步,为企业以及开发者用户实现灵活弹性自动化的基础设施。【夏日特促】全场产品88折优惠码:Summer_2021时间:2021年8月1日 — 2021年8月8日香港C...