Sharp MZ-700 Owner's Manual page 144
Hide thumbs
Also See for MZ-700:
- Service manual (60 pages) ,
- Basic manual (109 pages) ,
- Owner's manual (245 pages)
Table of Contents
Advertisement
[Keyboard matrix circuit]
8255 outputs keyboard scan signals from port PA to the keyboard and reads key data from port PB.
The figure below snows the key matrix .
...
0
0
w
~
ell
....
~
15
t-:0---f------i
~
3
~
Keyboard connector
L
E
0
l
~®®@®®0®®®®®®@®@®@@@
i
GNO
142- - - - - - - - - - - - - - - - - -
--
-- - - - - - - - - - - - - - -
Hide quick links:
Advertisement
Table of Contents
