介绍8位加法器、分频电路、数字秒表的PPT，带源码，解释详细，一步一步学习，是学习VHDL的好-introduced eight Adder, the frequency divider circuit, digital stopwatch, the PPT, with the source code, explained in detail, step by step, learning, VHDL is a good learning Eastern

Although accurate digital thermometers are now available at low cost, it remains exciting and instructive to build one your- self. The present circuit is particularly intended to help the reader in the use of a PIC processor Type PIC16F84 (