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Description: 按照音符来设定频率和8253定时/计数器的延时时间。8253的CLK0接1MHz时钟，GATE0接＋5V，OUT0接8255的PA0,J1接喇叭，编程使计算机的数字键1、2、3、4、5、6、7作为电子琴按键，按下即发出相应的音阶。
要求：
(1)层以8255接八个开关K1~K8，做电子琴按键输入。
(2) 以8253控制扬声器，拨动不同的开关，发出相应的音阶。
Platform: |
Size: 72523 |
Author: hyc |
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Description: 实验电路如图25，按虚线连接电路：CLK0接1MHz，GATE0，GATE1，接+5V，OUT0接CLK1，OUT1接PA0，PC0接继电器驱动电路的开关输入端Ik。继电器常开触点串联一个220V灯泡，接交流220V。编程使用8253定时，让继电器周而复始的闭合5秒钟（指示灯灯亮），断开5秒钟（指示灯灯灭）
Platform: |
Size: 611 |
Author: xiaoxiongweini |
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Description: 按照音符来设定频率和8253定时/计数器的延时时间。8253的CLK0接1MHz时钟，GATE0接＋5V，OUT0接8255的PA0,J1接喇叭，编程使计算机的数字键1、2、3、4、5、6、7作为电子琴按键，按下即发出相应的音阶。
要求：
(1)层以8255接八个开关K1~K8，做电子琴按键输入。
(2) 以8253控制扬声器，拨动不同的开关，发出相应的音阶。
-In accordance with the note to set the frequency and 8253 timer/counter of delay time. 8253 s CLK0 then 1MHz clock, GATE0 then 5 V, OUT0 then 8255 the PA0, J1 next speaker, programming the computer as the number keys 1,2,3,4,5,6,7 flower button, press that issued the corresponding scale. Requirements: (1) layer to 8255 next eight switch K1 ~ K8, so flower keystrokes. (2) 8253 control speakers, struck a different switch, the issue of the appropriate scale.
Platform: |
Size: 72704 |
Author: hyc |
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Description: 8233,8253In accordance with the note to set the frequency and 8253 timer / counter of delay time. 8253 s CLK0 then 1MHz clock, GATE0 then 5 V, OUT0 then 8255 the PA0, J1 next speaker, programming the computer as the number keys 1,2,3,4,5,6,7 flower button, press that issued the corresponding scale. Requirements: (1) layer to 8255 next eight switch K1 ~ K8, so flower keystrokes. (2) 8253 control speakers, struck a different switch, the issue of the appropriate scale.-In accordance with the note to set the frequency and 8253 timer/counter of delay time. 8253 s CLK0 then 1MHz clock, GATE0 then 5 V, OUT0 then 8255 the PA0, J1 next speaker, programming the computer as the number keys 1,2,3,4,5,6,7 flower button, press that issued the corresponding scale. Requirements: (1) layer to 8255 next eight switch K1 ~ K8, so flower keystrokes. (2) 8253 control speakers, struck a different switch, the issue of the appropriate scale.
Platform: |
Size: 132096 |
Author: 叶辉 |
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Description: 实验电路如图所示，8253的CLK0接1MHz时钟，GATE0接＋5V，OUT0接8255的PA0,J1接喇叭，编程使计算机的数字键1、2、3、4、5、6、7作为电子琴按键，按下即发出相应的音阶。-The experimental circuit shown in Figure, 8253' s 1MHz clock CLK0 then, GATE0 then+5 V, OUT0 then 8255 the PA0, J1 then speakers, computer programming so that as the number keys 1,2,3,4,5,6,7 flower button, press that the issue of the appropriate scale.
Platform: |
Size: 12288 |
Author: 韩雷 |
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Description: 一. 实验目的：
1.了解光电开关的使用方法
2.了解利用光电传感器测量电机转速的方法
二.光电测速基本原理
光电测速的基本电路由光电传感器、计数器和定时器组成。测量时在被测电机主轴上固定一个圆盘，圆盘的边缘上打上小孔。传感器的红外发射端和接收端装在圆盘的两测，电机带动圆盘转到有孔的位置时，红外光通过，红外接收管导通，输出低电平。红外光被挡住时接收管截止，输出高电平。用计数器记录在一定时间内传感器发出的脉冲个数就可以计算出电机转速。
三.实验内容
1.接线方法：直流电机计数端接8253 CLK1；8253 CLK0接1MHZ脉冲；OUT0接CLK2；OUT2接8255的PA0；GATE0、GATE2接+5V；GATE1接PC0；8253 CS接280H；8255 CS接288H；DJ接电位器RW1的中间头。
2.编程：利用8253定时器1记录脉冲个数，8253定时器0和定时器2组成10～60秒定时器，测量在一定时间内脉冲个数，算出电机每分钟转速，显示在屏幕上。-1.Understand the operation method of optoelectronics switch
2.The method understood to make use of optoelectronics to spread a feeling machine to measure electrical engineering to turn soon
Two.The optoelectronics measures soon basic principle
The optoelectronics measures soon basic electric circuit to be spread a feeling machine by the optoelectronics, count a machine and in fixed time the machine constitute.Fix a disk in being measured an electrical engineering principal axis while measuring, beat eyelet on the edge of disk.The red outside blast-off that spreads a feeling machine carries and receives to carry to pack in the disk of two measure, when the electrical engineering arouses a disk to turn to the position of having the bore red outside and only pass, red circumscribe to accept a tube to lead, output low electricity even.Red receive a tube to close while outside and only being held up, output Gao Dian Ping.Use to count a machine record in certain time inside spread the p
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Size: 32768 |
Author: 杨进 |
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Description: 利用实验台上8253定时/计数器对1MHz时钟脉冲进行分频，产生频率为1Hz的方波信号，并用逻辑笔观察OUT1引脚输出电平的变化-8253 timer
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Size: 225280 |
Author: zhuwangchun |
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Description: 先初始化各芯片，包括8233接二极管，8253接1MHZ频率，数据口放入0C350H，8259用IRQ3等；然后，开中断，等待脉冲中断。一次脉冲会在DATA6中记录，满20次脉冲表明过了1秒钟，此时，LED更新时间，中断处理程序用来实现LED显示的控制和状态是否要改变的判断；WATING程序段用来实现二极管的显示以及是否进入3秒以内，若小于等于3秒，则调用闪烁程序。
设置DI作为变量保存状态2到状态9执行一次的循环次数，循环一次，DI就自减1，若DI不为0，则跳转到状态2重复执行，若DI减为0，则跳转到状态10，即进入夜间模式。
夜间模式执行完之后，进入状态1，完成红绿灯白天工作的初始化，往下执行。
运行过程：
先全黄灯亮5s，初始化；东西绿灯，南北红灯 10s 东西绿灯+红灯，南北红灯 10s 东西绿灯+黄灯，南北红灯 5s 东西黄灯，南北红灯 5s；东西红灯，南北绿灯 10s 东西红灯，南北绿灯+红灯，10s 东西红灯，南北绿灯+黄灯 5s 东西红灯，南北黄灯 5s；全黄灯，夜间， 5s 全黄灯 5s,初始化；……
-Sorry,I am not good at English!!
Platform: |
Size: 4096 |
Author: linjie |
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Description: 实验电路如图25，按虚线连接电路：CLK0接1MHz，GATE0，GATE1，接+5V，OUT0接CLK1，OUT1接PA0，PC0接继电器驱动电路的开关输入端Ik。继电器常开触点串联一个220V灯泡，接交流220V。编程使用8253定时，让继电器周而复始的闭合5秒钟（指示灯灯亮），断开5秒钟（指示灯灯灭）-The experimental circuit shown in Figure 25, connected by dotted line circuit: CLK0 connected 1MHz, GATE0, GATE1, then+5 V, OUT0 then CLK1, OUT1 connected PA0, PC0 then switch relay drive circuit input Ik. Relay normally open contact in series a 220V light bulb, then AC 220V. Programming using the 8253 timer, so that the relay closed cycle of 5 seconds (LED lights), off 5 seconds (LED OFF)
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Size: 1024 |
Author: 张琪 |
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Description: 本实验使用8253的定时计数器2，GATE2接到开关K1上，CLK2接1MHZ的时钟脉冲，OUT2接示波器观测输出波形，并在数码管上显示“8253---C”。-The timing of the experiments using 8253 counter 2, GATE2 received on the switch K1, CLK2 clock pulses received 1MHZ, OUT2 connected oscilloscope to observe the output waveform and digital display " 8253--- C" .
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Size: 112640 |
Author: zhaolulu |
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Description: 本实验用8253做定时器输出音频信号，控制喇叭发出声音
将8253的CLK1接到1MHz脉冲信号上（1MHz信号可由4MHz信号
分频后得到），GATE1接VCC，OUT1接喇叭的脉冲输入。-useing the chip of 8253 to control the loudspeaker
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Size: 1024 |
Author: 建州 |
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Description: 用8253对标准脉冲信号进行计数，就可以实现定时功能。用板上的1MHz作为标准信号，将8253可编程计数器/定时器的时间常数设在1000000次，就可以在定时器的管脚上输出1秒针高/1秒钟低的脉冲信号。因为8253每个计数器只有十六位，要用两个计数器才能实现一百万次的计数，实现每一秒输出状态发生一次反转。-With 8253 pairs of standard pulse counting, timing can be achieved. 1MHz with the board as a standard signal, the 8253 programmable counter/timer time constant in one million times, you can pin on the timer output 1 second hand high/low 1 second pulse signal. Since 8253 only sixteen per counter, can be achieved using two counters count a million times, to achieve the output state occurs once every second reversal.
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Size: 1024 |
Author: 徐荣敏 |
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Description: 利用通用微机实验箱实现文字冒险游戏《赎罪之钟》。对于正在进行微机原理创新实验的大学生很实用。接线方法：
PA7~PA0接数码管段码口，PB5~PB0接数码管位码口，PC7~PC0接LED灯，8253计数器0的CLK接1MHZ，GATE接5V，OUT接IRQ，8253地址D400H，8255A基地址D408H。-The use of general-purpose microprocessor to achieve the experimental box text adventure game " Atonement bell." Microcomputer Principle to the ongoing innovation of undergraduates is very practical. Wiring Method: PA7 ~ PA0 access digital pipe yards mouth, PB5 ~ PB0 connected digital bit code mouth, PC7 ~ PC0 connected LED lights, 8253 Counter 0 CLK pick 1MHZ, GATE then 5V, OUT connected to IRQ, 8253 Address D400H, 8255A base address D408H.
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Size: 6144 |
Author: 李刚 |
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Description: 实验要求一：将频率为1MHz的时钟信号加载CLK0输入端，并让通道0工作于方式2。若选择计数初值N0=20000，则从OUT0端可得到序列负脉冲，其频率为1MHz/20000=50Hz，周期为20ms。再把该信号连到CLK1输入端，并使通道1工作于方式3。为了使OUT1输出周期为2秒（频率为1/2=0.5Hz）的方波，应取时间常数N1=50Hz/0.5Hz=100。
实验要求二：利用8255，8253控制LED显示，制作跑马灯。
编程代码：
-Experimental requirements: will the frequency of 1 MHZ clock signal loading CLK0 input, and let the channel 0 in mode 2. If choose count initial N0 = 20000, the negative pulse sequence can be obtained from the OUT0 end, its frequency is 1 MHZ/20000 = 50 hz, cycle of 20 ms. Connect the signal to the CLK1 input, and make the channel 1 work in 3 ways. In order to make the OUT1 output cycle for 2 seconds (square wave frequency for 1/2 = 0.5 Hz), should take time constant N1 = 50 Hz/0.5 Hz = 100.
Experimental requirements 2: use 8255825 3 control LED display, make entertaining diversions.
Programming code:
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Size: 26624 |
Author: star |
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Description: 该系统是一个简单的利用8253定时器、8255可并行通信接口和中断控制器8259设计的电子时钟系统，在该系统中设有一个启动键，启动键未按下时，显示初始化界面“HELLO”；当按下启动键时，8253定时器开始计时（8253的初值为10000，接1MHz的脉冲，即当8253计满100时正好是1S），当计时计满100时，8259便产生一次中断，在LED显示器便显示系统预先设计好的初始值“23.59.55”便开始从秒位开始加1，当加到10S时，10s位加1，加到60S时分位加1，同时秒位清零，同时怎加到24点时全部清零。-The system is a simple to use timer 8253, 8255 parallel communication interfaces and interrupt controller 8259 designed electronic clock system has a start button in the system, the start button is not pressed, the display initialization interface " HELLO" when you press the start button, the timer starts counting 8253 (initial value of 8253 to 10000, then 1MHz pulse, that is when the 8253 count is just over 100 1S), when the timer count over 100, 8259 will generate an interrupt , the LED display will show the initial value of the pre-designed system " 23.59.55" started second position start plus 1, when applied to the 10S, 10s-bit plus 1 plus 1 bit is added to 60S division, while second bit is cleared zero, how was added 24 points while all clear.
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Size: 2048 |
Author: jc |
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