Search - interrupt timer routine

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[assembly language] 3 DL : 0: 程序功能为3位数码管定时更新显示，T0定时中断服务程序用于50ms扫描3位数码管，实现3位数码管的动态显示，显示内容为：000~999。-The program features three digital tube display is updated regularly, T0 timer interrupt service routine for 50ms scan three digital tube, three digital tube dynamic display, the display content: 000 to 999.
Date : 2026-01-22 Size : 2kb User : zhangming
[assembly language] clock DL : 0: 定时器每100us中断一次，在中断服务程序中,对中断次数进行计数，100us计数10000次就是1秒。然后再对秒计数得到分和小时值，并送入显示缓冲区。-Timer interrupt every 100us, in the interrupt service routine, the interrupt number of counts, 100us count is 1 second 10000. Then seconds count the minutes and hours values 椠渀琀漀 the display buffer.
Date : 2026-01-22 Size : 33kb User : 冯建明
[assembly language] INT0 DL : 0: INT0的中断服务程序及脉宽测量通过按键产生/INT0 有效信号，在P3.4 引脚上输出指示信号；并测量按键操作在/INT0引脚上产生的高电平的脉宽。注意：实际操作时，测试的脉冲宽度有可能超过16 位计数器的定时范围。操作时，考虑用蜂鸣器或指示灯作为状态提示。 -INT0 interrupt service routine and pulse width measurement Produced by key/INT0 valid signal, the output signal indicating the P3.4 pin and measure the pulse width of the key high-level operations on the/INT0 pin is generated. Note: the actual operation, the pulse width of the test is likely to exceed the range of 16-bit timer counter. Operation, considered as a status indicator buzzer or tips.
Date : 2026-01-22 Size : 1kb User : Pan
[assembly language] include DL : 0: 中断程序的编写：在单片机系统的p1口上接有8个LED，LED的阳极接+5V，阴极接P1口的引脚。当P1口某一口线输出为0时，将LED点亮。在外部中断0输出引脚P3.2引脚上接上上拉电阻并接有一个按钮开关K1。用K1按钮来产生外部中断0的输入信号。定时器程序的编写：在AT89S51单片机的P1口上接有8个LED.下面采用定时器T0的方式一的定时中断方式，使P1口外接的8个LED每0.5秒闪亮一次。C51程序：在AT89S51的P1.0脚接有一只发光二极管，二极管的阴极接P1.0脚，阳极通过限流电阻接+5V，现在让发光二极管每隔800毫秒闪灭，占空比为50 。不使用函数strcat（），用字符指针变量作函数参数编程实现字符串连接函数strcat()的功能，将字符串srcStr连接到字符串dstSTR的尾部。用基本文件操作编写DOS下的TYPE命令，即把文件内容以ASCII码字符方式向标准输出设备输出。-Write interrupt routine: on the SCM system p1 port connected with 8 LED, LED anode connected to+ 5V, the cathode connected to the P1 port pins. When a certain line P1 port output is 0, the LED lights. In the pull-up resistor connected to the external interrupt and then there is a button to switch on the K1 0 output pin P3.2 pin. With K1 button to generate an external interrupt 0 input signal. Write timer programs: On AT89S51 microcontroller P1 port is connected with 8 LED timer below using the timer T0 interrupt the way a way to make the P1 port 8 LED external flash once every 0.5 seconds. C51 Procedure: AT89S51 of P1.0 pin is connected with a light emitting diode is connected to P1.0 cathode and the anode through the current limiting resistor connected to+ 5V, now let the light emitting diode flash off every 800 ms, the duty cycle is 50 . Do not use the function strcat (), with the character pointer variable as a function parameter programming string concatenation function strcat ()
Date : 2026-01-22 Size : 11kb User : ningjieqiong