Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Screen-labeled function keys are a special case of function keys where keys are placed near a screen, which provides labels for them. These are most commonly found in kiosk applications, such as automated teller machines and gas pumps. These were first developed by Hewlett-Packard ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Screen-labeled function keys are a special case of function keys where keys are placed near a screen, which provides labels for them. These are most commonly found in kiosk applications, such as automated teller machines and gas pumps. These were first developed by Hewlett-Packard in the 1970s. The HP 9830 desktop computer was the first calculator with two rows of 4 keys, over which a paper overlay would be placed. These were later adapted to terminals. Programmers found that the HP 2640 terminals could lock the top two lines of the screen, so they displayed the key functions there. Starting with HP 2647 terminal, the keys were re-arranged to correspond with 2 pairs of 4 labels at the bottom of the screen. These could be programmed by escape sequence or configuration screen.