HP48

Technical Details of the HP48G Series with link to the HP48S specific page

 HP48S          HP48G 'On' Detail      'On" Key Cap  

                             'ON' Pad Detail        'ON'/Beep Wires

                             'On' Pad Detail Fine   KB Conn.  

HP48G Keyboard Contacts Bottom         HP48G Keyboard Contacts Top

Serial Ports                 Battery Drain Table