设计一个两个5位数相乘的乘法器。用发光二极管显示输入数值，用7段显示器显示结果。乘数和被乘数分两次输入(verilog语言实现)-Design a multiplier of two 5-digit multiplication. Enter the value with the light-emitting diode display, with 7-segment display shows the results. Multiplier and the multiplicand input twice (verilog language)