00299nam a2200109Ia 450000500170000000800410001708200160005810000210007424500440009526000420013930000080018120260225051009.0260224s9999||||xx |||||||||||||| ||und||  a510.783 BAR  aRobert C. Baron  0aDigital logic and computers operations   aNew York: McGraw-Hill Book Co. c1967  a330