IBM 6580 User Manual

line again. This process of scanning
the pad card matrix is continuous.
If a change is sensed when checking a
sense line, the microprocessor will
<II
(04) D
CI)
c:
::i
5l
c:
CI)
(I)
(27) E
Figure 5-7. Keyboard Matrix Chart
store the new state of the key;module
(for example, pressed or released),
and if required, transmit the data to
the system.
Drive Lines
5-6 IBM Displaywriter Product Support Manual

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English