Commodore B Series Users Guide

The computers in the B' Series have many common features,
and you can add enhancements to the lower end systems to give
them the extra capabilities that are standard on our more sophis
ticated systems. The following features are common to all B'
Series computers:
• 80 column by 25 line screen display
• Separate calculator keypad for quick computations
• 10 predefined function keys
• Total of 20easy-to-define function keys
• Extended BASIC version 4.0+
• Expandable memory
• IEEE-488bus
• RS-232C interface
• 6509 microprocessor
• Direct audio output