Return - DEC VT220 Technical Manual

Table 7-5
Keyboard Division Default Modes
Keyboard Division
Main array
Keypad
Delete
Cursor keys
Return and tab
Lock and compose
Shift and control
Six basic editing keys
Mode
Autorepeat
Autorepeat
Autorepeat
Autorepeat
Down only
Down only
Down/up
Down/up
AR
Buffer
o
o
1
1
Table 7-6 Defaul t Ra tes in Autorepeat Buffers
Buffer Timeout Internal
Number (ms)
(Hz)
0 500 30
1
300 30
2 500 40
3
300 40
7.6 SPECIFICATIONS
Functional
Electronics
Cord
Keypad
Home row key height
Keys
Main keypad
8-bit microprocessor, 4 KB of ROM, 256
bytes of RAM, 4 LEDs, transducer
1.9
m
(6
ft) coiled, 4-pin
telephone-type modular connectors,
plugs into display monitor (PN BCC01)
Sculptured key array
30 mm (1.16 in) above desk top
105 matte textured finish keys
57 keys
7-39