メーカー各種紹介

• 
  CD4001AE
• Manufacturer:RCA
  
  Year/Week:1978/19th
  
  Country:USA
  
• 
  MC14001CP
• Manufacturer:Motorola
  
  Year/Week:1976/46th
  
  Country:USA
  
• 
  HD14001BP
• Manufacturer:Hitachi
  
  Year/Week:1980/52th
  
  Country:Japan
  
  日立製の4001です。
  
• 
  TC4001BP
• Manufacturer:Toshiba
  
  Year/Week:1984/10th
  
  Country:Japan
  
  東芝製の4001です。