A method of treating Parkinson’s disease by administering the racemic mixture of D,L-DOPA in combination with both peripheral amino acid decarboxylase and catechol, O-methyltransferase inhibitors in pharmaceutically acceptable salts forms and effective doses for the treatment of Parkinson’s disease. The electronic device includes a display module and a projection module, and is capable of displaying output content through the display module or projecting the output content to a projection screen. The byte array fields may be chosen to facilitate searching at the byte array level. Thus, when etching the oxide liner and the bulk oxide layer between stack structures, a common dielectric top surface is formed that is substantially planar and without grooves.