Location:
Search - 74164 LED
Search list
Description: 本程序用at16实现两根线(两个i/o口)+8片74164+一片ULN2003驱动24个LED数码管,通过串口写入要显示的数,可以在很多地方应用
-at16 the procedures used to achieve two lines (2 i / o) are 8 1 74164 24 ULN2003 drive LED digital control through serial write to show that the number can be applied in many places
Platform: |
Size: 2939 |
Author: 邵忠文 |
Hits:
Description: 51单片机通过74164扩展串口驱动4位led显示（含sch图和源程序）-51 through 74164 microcontroller serial expansion drive led four shows (including sch map and the source)
Platform: |
Size: 2871 |
Author: 阿颖 |
Hits:
Description: LED动态扫描.采用74164做为显示数据输出,使I/O口减少至两个,并且可做为驱动,是小系统LED显示的最佳方法-LED dynamic scanning. Using 74,164 as output data show that, I / O port reduced to two, but also to drive, is a small LED display system the best way
Platform: |
Size: 1693 |
Author: 杨森 |
Hits:
Description: LED动态扫描.采用74164做为显示数据输出,使I/O口减少至两个,并且可做为驱动,是小系统LED显示的最佳方法-LED dynamic scanning. Using 74,164 as output data show that, I/O port reduced to two, but also to drive, is a small LED display system the best way
Platform: |
Size: 1024 |
Author: 杨森 |
Hits:
Description: 本程序用at16实现两根线(两个i/o口)+8片74164+一片ULN2003驱动24个LED数码管,通过串口写入要显示的数,可以在很多地方应用
-at16 the procedures used to achieve two lines (2 i/o) are 8 1 74164 24 ULN2003 drive LED digital control through serial write to show that the number can be applied in many places
Platform: |
Size: 3072 |
Author: 邵忠文 |
Hits:
Description: 51单片机通过74164扩展串口驱动4位led显示（含sch图和源程序）-51 through 74164 microcontroller serial expansion drive led four shows (including sch map and the source)
Platform: |
Size: 3072 |
Author: 阿颖 |
Hits:
Description: 用74164驱动数码管显示，用单片机来控制，用LED灯来显示-Drive LED display with 74164
Platform: |
Size: 44032 |
Author: dfd |
Hits:
Description: 有效，即允许RXD发送数据，同时，允许从TXD端输出移位脉冲。第一帧（8位）数据发送完毕时，各控制信号均恢复原状态，只有TI保持高电平，呈中断申请状态。第一个74HC164把第一帧数据并行输出，LED1显示该数据（发送时序如图2所示）。然后，用软件将TI清零，发送第二帧数据。第二帧数据发送完毕，LED1显示第二帧数据，第一帧数据串行输入给第二个74HC164，LED2显示第一帧数据。依此类推，直到把数据区内所有数据发送出去。应该注意，数据全部发送完后，第一帧数据在最后一个LED显示。由于TXD端最多可以驱动8个TTL门，当LED显示器超过8个时，我们采用74HC244芯片驱动。每个74HC244有8路驱动，每一路可驱动8个LED，即每增加一个74HC244，可增加64个LED驱动。
为了节省管脚，想用74164来做数码管。第一次做串行的东西。上了电以后，显示根本不对啊，测164并行输出口的高低电平，也是不对的。
-Effective, that allowed RXD send data, meanwhile, is allowed from TXD at output shift pulse. The first frame (8) data sending finished, the control signal are restored the original state, only keep a high level, TI application state interruption. The first 74HC164 put the first frame data parallel output, LED1 showed that the data (sending timing as figure2shows). Then, use the software will TI reset, send the second frame data. The second frame data sending finished, LED1 shows the second frame data, the first frame data 74HC164 serial input to the second, LED2 shows the first frame data. By analogy, until the data in all data sending out. Should pay attention to, after all, data sent the first frame data on the final LED display. Because most TXD end can drive eight TTL door when more than 8 LED display, we adopt 74HC244 chip driver. Each 74HC244 eight road drive, every way can drive eight LED, namely every add a 74HC244, can increase the 64 LED drivers.
In order to save the tube
Platform: |
Size: 4096 |
Author: wangbing |
Hits:
Description: 74165的输入口接8个按键，74164的输出接8个发光二极管，按键按下时，在发光二极管上以十六进制格式显示按键键码。-74165 8 pick the input of key, then the output of 74,164 8 light-emitting diode, button pressed, the LED on the key in hexadecimal format key code.
Platform: |
Size: 1024 |
Author: zhangqi |
Hits:
Description: 基于74164的IO口拓展8个LED显示-8 LED display based on 74,164 of the IO port expansion
Platform: |
Size: 35840 |
Author: li |
Hits: