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Description: 带闹钟功能，可以调整闹钟和时间。文件含有protel 做的原理图和PCB文件
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Size: 198668 |
Author: cloudsy |
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Description: IA4420 工作在315/433/868/915MHz 频段（IA4421 工作在433/868/915MHz 频段）；
2． 低电压工作，工作电压2.2V~5.4V；
3． 低功耗模式，待机电流0.3uA；
4． 调制模式FSK，并具备高度集成的PLL；
5． 低发射功率、高接收灵敏度设计，发射功率5~10 dbm 可调，接收灵敏度-109 dbm；
6． 内置时钟输出，可省掉MCU 的晶振；
7． 传输数据率高，数字信号可达115.2 kbit/s,模拟信号可达256 kbit/s；
8． 发射频偏与接收带宽可调；
9． 内部有数字滤波器，并可以根据要求选择不同的方式；
10． SPI 的控制接口，方便使用；
11． 接收时有数据同步码识别器，系统检测同步码后将后面的数据输出；
12． 有16 位的收发缓存器，用来缓存接收到或要发送的数据（接收数据有两种方式，用户可以按需选择）；
13． 有低电压检测器，从2.2-5.4V 可调；
14． 有定时唤醒功能，定时时间可达几天；
15． 天线的兼容性强，有天线自动调节功能，并可采用PCB 或外置天线；
16． 工作温度范围-40~85，储存温度范围-55~125℃；
17． 采用微小TSSOP16 封装。
-315/433/868/915MHz IA4420 work in the band (IA4421 Working in 433/868/915MHz band); 2. Low-voltage, voltage 2.2 V ~ 5.4V; 3. Low-power mode, standby current 0.3 uA 169* 85*; 4. FSK modulation mode, and highly integrated PLL; 5. Low emission power and high receiver sensitivity, launched power 5 ~ 10 dbm adjustable,-109 dbm receiver sensitivity; 6. Built-in clock output can be saved MCU resonator; 7. Higher data transmission rate, digital signal of up to 115.2 kbit/s, analog signal up to 256 kbit/s; 8. Emission Offset and receiving adjustable bandwidth; 9. Internal digital filters, and may request to have a choice of different ways; 10. SPI control interface, and ease of use; 11. When receiving data synchronization code identifier, the system will detect synchronous code behind the
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Size: 38912 |
Author: |
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Description: 数字钟电路及PCB SCH图 已经实现且较为计时准确-digital clock circuit and PCB SCH map has been achieved with a more accurate time
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Size: 496640 |
Author: |
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Description: 一个基于51单片机的时钟电路设计源代码，还包括了电路图、PCB、源程序，很好的学习资料哦-MCU clock circuit design source code, also includes a circuit diagram, PCB, source and a good learning materials oh
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Size: 632832 |
Author: 吴林煌 |
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Description: 12C887 的驱动程序，能完成时钟的基本功能，如需要增加其他功能，更是方便添加-12C887 driver clock to complete the basic functions, such as the need to increase other functions, it is convenient to add
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Size: 1190912 |
Author: 鼠飚 |
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Description: rfid pcb
具有，时钟和存储，可作为考勤和收费系统。
频率：13.56
传输：232和带隔离的485-rfid pcb with, the clock and storage, can be used as attendance and revenue collection system. Frequency: 13.56 Transmission: 232 and 485 with isolated
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Size: 100352 |
Author: 郎济东 |
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Description: 利用热释红外传感器、12C887和PIC单片机制作的智能电子时钟-The use of pyroelectric infrared sensors, 12C887 and PIC Singlechip produced intelligent electronic clock
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Size: 2891776 |
Author: G.H.Wu |
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Description: 这是一个ds1307实现的时钟!!使用51mcu实现,里面包括一个isp模拟程序-This is a DS1307 to achieve the clock!! Use 51mcu to achieve, which includes a simulation program isp
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Size: 63488 |
Author: 杨川 |
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Description: 基于PCB 仿真的高速时钟电路设计研究，基于PCB 仿真的高速时钟电路设计研究。基于PCB 仿真的高速时钟电路设计研究-PCB-based simulation study of high-speed clock circuit design, PCB-based simulation study of high-speed clock circuit design. PCB-based simulation study of high-speed clock circuit design
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Size: 123904 |
Author: 我 |
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Description: 带闹钟功能，可以调整闹钟和时间。文件含有protel 做的原理图和PCB文件-With alarm function, you can adjust the alarm and time. Does the document contain Protel schematic and PCB documents
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Size: 198656 |
Author: cloudsy |
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Description: mega128做的ds12887的时钟，带阴历，测温；原理图，pcb和程序．-mega128 clock ds12887 do with the lunar calendar, temperature measurement schematic, pcb and procedures.
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Size: 2520064 |
Author: zzy |
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Description: 时钟的设计。此设计为：万年历带农历显示年月日。汇编程序，pcb图，实物图等都在此文件中，是很好的资料-Clock design. This is designed to: bring the Lunar calendar date display. Assembler, pcb map, physical map, etc. In this paper, is a very good information
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Size: 915456 |
Author: sugarman2005 |
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Description: 带温度显示的电子钟，有闹钟。整点报时等功能。有PCB图。显示不是中断显示，所以按住按键时间长的话会有不显示的现象，但放开开关就会好了-With electron temperature shown in the clock has an alarm clock. The whole point timekeeping functions. PCB plans have. Display is not interrupted show, so hold down the button, then there will be a long time do not show the phenomenon, but the switch will open up better
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Size: 2715648 |
Author: 井威 |
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Description: 12864型电子钟
杜洋老师的十六进制文件（直接烧制单片机中即可用）电路图 PCB，完整制作资料-12864 E-bell
teacher‘s document (single chip can be produced directly using) circuit PCB, complete production information
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Size: 1892352 |
Author: 马寅 |
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Description: 89C2051带音乐电子钟程序，有PCB图及原理图图片。-Electronic clock with music 89C2051 procedures PCB schematic diagram and picture.
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Size: 184320 |
Author: LCB |
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Description: 1302单片机控制的时钟，仿真图，PCB图，以及程序，学习单片机的好资料。-1302 single-chip microcomputer to control the clock, simulation plans, PCB plans and procedures, learning good information on single-chip microcomputer.
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Size: 22528 |
Author: victorlee |
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Description: 单片机可调时钟，我工程训练时候的项目。含有仿真图，PCB图，以及c程序。希望可以对初学者有所帮助。-Adjustable Single-chip clock, when I work training projects. Contain simulation map, PCB plans, as well as the c program. Hope that we can be helpful for beginners.
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Size: 740352 |
Author: victorlee |
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Description: 飞思卡尔小车的车模PCB。看清楚，是车模PCB。-Containing annotations. Interface very beautiful! Classic clock interface, there is no DLL, novice can understand.
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Size: 15360 |
Author: 王建 |
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Description: This assembly codes defined, interfacing to DS1307 with 8051 micro-controller with PCB layout-This assembly codes defined, interfacing to DS1307 with 8051 micro-controller with PCB layout
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Size: 785408 |
Author: bassa |
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Description: 史上最华丽的12864时钟液晶显示，具有定时、时间显示、温度显示还具有电机正反转控制-In the history of the most gorgeous LCD clock 12864 with time, time display, temperature display also has a motor reversing control
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Size: 18714624 |
Author: 董宇 |
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