Keyboard Codes - NCR Decision Mate V Hardware System Technical Manual

KEYBOARD CODES

The layout of the keyboard is shown in Figure 2.31 and gives the
key-switch position number for each of the 100 keys in the key­
board. Each key-switch can generate up to three different codes
depending upon whether it is pressed alone, together with the shift
key, or together with the Control key.
The codes generated by the alphabetic keys are changed from
lower to uppercase or upper to lowercase when the Capital Mode
key is pressed, for example, pressing the key in position C5 on the
US English version of the keyboard produces the keycodes and
characters shown in Figure 2.30.
Key(s)
C5
C5 w ith S h ift
C5 w ith Capital Mode
C5 w ith Capital Mode and S h ift
C5 w ith C ontrol
The keycodes for version 1 keyboards are shown in Figure
2.32, and for version 2 keyboards in Figure 2.33.
2-38
Figure 2.30 Keycode example
Figure 2.31 Keyboard switch positions
Keycode Character
67
9
47
G
47 G
67
9
17