一个秒表的硬件设计，学习数字电路中基本RS触发器、单稳态触发器、时钟发生器及计数、译码显示等单元电路的综合应用。-The hardware design of a stopwatch, learn basic digital circuit in the RS flip-flops, monostable multivibrator, the clock generator and counting, decoding display unit integrated circuit applic

用VHDL语言设计一个8位双向可控移位寄存器。 移位寄存器由D型触发器构成，采用串入并出形式。 采用VHDL方式设计一个16х4位RAM存储器-VHDL language to design an 8-bit bidirectional shift register controllable. The shift register by a D-type flip-flops, using the string into and out of form. Way design using