--am us  eng
++000    00000nam a2200000 a 4500
++020    |a0071137041
++090    |a621 TOK
++100 1  |aTokheim, Roger L.
++245 10 |aDigital Electronics /|cRoger L. Tokheim
++250    |a4th ed.
++260    |aNew York:|bMcgraw-Hill,|c1994.
++300    |a345 p.:|bill.;|c27 cm.
++690    |aElectronic & Electricity_電子與電學