Terminal Keyboard Layouts

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:

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):

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.