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Description: 74ls32的器件数据手册，是英文的
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Size: 243190 |
Author: lvjinwen |
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Description: 74ls32的器件数据手册，是英文的 -74ls32 device data manual is in English 74ls32 the device data manual is in English
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Size: 242688 |
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Description: 电路与程序分析:我们选用的是MCS51系列单片机74LS273 D锁存器 74LS32 或门电路 ，单片机做主控, 因为单片机的端口有限所以用74LS273做锁存 74LS32做脉冲分配-Circuit and program analysis: Our choices are the MCS51 series microcontrollers 74LS273 D latch 74LS32 OR gate circuit, the controlling microcomputer, because the port is limited microcontroller to do so with the 74LS273 latch 74LS32 do pulse distribution
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Size: 248832 |
Author: 谢统辉 |
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Description: 设计一个采用数字电路实现,对时,分,秒.数字显示的计时装置,周期为24小时，显示满刻度为23时59分59秒，并具有校时功能和报时功能的数字电子钟。电路主要采用中规模集成电路.本系统的设计电路由脉冲逻辑电路模块、时钟脉冲模块、时钟译码显示电路模块、整电报时模块、校时模块等部分组成。采用电池作电源，采用低功耗的芯片及液晶显示器，发生器使用石英晶振、计数振荡器CD4060及双D触发器74LS74，计数器采用同步双十进制计数器74LS160，锁存译码器是74LS248，整电报时电路用74LS74，74LS32及扬声器构成。-Design a digital circuit, on the hours, minutes, seconds. Figures show that the timing device, 24-hour period, indicating full scale is 23:59:59 and the time with school functions and timekeeping functions of digital electronic clock. Scale integrated circuits used in the main circuit. The design of this system by the pulse logic circuit module, clock module, the clock display circuit decoding module, when the entire cable module, the campus module components. Using a battery powered, low-power chips and liquid crystal display generator using a quartz crystal oscillator, count of CD4060 oscillator and two D flip-flop 74LS74, two-decimal counter synchronous counter 74LS160, latch decoder is the 74LS248, the whole When telegraph circuits 74LS74, 74LS32 and loudspeaker
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Size: 449536 |
Author: 张龙 |
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