Hewlett-Packard terminals contain keys for the entire ASCII character
set. These characters can be displayed on the CRT screen and printed
on a printer. HP terminals have three modes of operation:
Local (not connected to the HP 3000 system)
Non-printable keys include the SHIFT, BACKSPACE, RETURN,
and TAB keys. The ESC (escape) and CTRL (control) keys generate special codes for terminal operation. The most frequently used codes are the following key combinations (not case sensitive):
| CTRL-Y |
stop subsystem activity
|
| CTRL-S |
suspend output
|
| CTRL-Q |
resume output
|
Terminals come with various memory amounts. This affects the amount of information you can access at one time. When each line of the screen is filled, the top line scrolls up to make room for a new line at the bottom. This continues until terminal memory is filled. At this point, information will be lost from view when you enter another line because the line scrolled up at the top of the memory buffer is no longer available.
