Abstract: In this paper the authors study and discuss some problems emerging from Computer Aided Circuits Design(CACD)of general circuits:such as the character of error objective functions,variable optimization of large scale circuit systems,multiparameter large change sensitivity,combinatorial optimization of discrete elememt Value.The authors have proposed a computer method of Computer Optimized Circuits Design (COCD) and emphasized the computer algorithms. Computer Optimized Circuits Design Programs(COCDP)composed by the authors have realized the computer algorithms above and have been effectively applied to computer optimized circuits design of general circuits.The examples in the paper have ? the functions and effects of COCDP.