The operational method is disclosed, for storing analog data in an electrically programmable and erasable memory cell. The memory cell includes a transistor having a source, a drain, a control gate and a floating gate, where the source, the drain and a channel region therebetween being defined in a semiconductor...http://www.google.com/patents/US5555521?utm_source=gb-gplus-sharePatent US5555521 - Method of operating the semiconductor memory storing analog data and analog data storing apparatus
