用VHDL编写的计算器：能实现简单的加减乘除四则运算\calculator\add.vhd
................................................\..........\add1.vhd
................................................\..........\div.vhd
................................................\..........\fadd.vhd
................................................\..........\fadd4.vhd
................................................\..........\key_ctrl.vhd
................................................\..........\mul.vhd
................................................\..........\mul2.vhd
................................................\..........\segment.vhd
................................................\..........\sign.vhd
................................................\..........\sub.vhd
................................................\..........\top.bit
................................................\..........\top.ucf
................................................\..........\top.vhd
................................................\使用说明请参看右侧注释====〉〉.txt
................................................\calculator
用VHDL编写的计算器：能实现简单的加减乘除四则运算