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74LS74，74L

数字钟的设计用到，数制、基本逻辑运算、逻辑门电路、组合逻辑电路、触发器、时序逻辑电路、脉冲的产生等数字电路知识。-Digital clock design used, number system, basic logic operations, logic gates, combinational logic circuits, flip-flops, sequential logic circuits, pulse generator and digital circuit knowledge

Write VHDL specifications for an eight bit twisted ring counter based on each of the designs in the previous problem. Look at the synthesis report generated by the design tools (use the Spartan 2 xc2s15-cs144-6 part for this). How many fli

The code for the second version is shown below. The synthesis report indicates that this uses 4 flip flops and 11 LUTs of various types. The maximum estimated clock frequency is 200 MHz. These results are consistent with the observations m