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IBM selector-pen in use The IBM 3270 display terminal subsystem consists of displays, printers and controllers. Optional features for the 3275 and 3277 are the selector-pen , [ g ] ASCII rather than EBCDIC character set, an audible alarm, and a keylock for the keyboard.
An Informatics General computer programmer using XEDIT on an IBM 3279 terminal An early version of XEDIT from 1982, as displayed on a 3270 terminal emulator.. XEDIT is a visual editor for VM/CMS using block mode IBM 3270 terminals.
Model 1 – attached directly to a System/360 via a selector or multiplexor channel. Model 2 – attached via a 2840-1 control unit. A 2840 could attach up to four 2250s and provided buffering and a character generator. Model 3 – attached via a 2840-2 control unit. Model 4 – attached to an IBM 1130 minicomputer via the storage access ...
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.
The electric pen was the key component of a complete duplicating system, which included the pen, a cast-iron holder with a wooden insert, a wet cell battery on a cast-iron stand, and a cast-iron flatbed duplicating press with an ink roller.
A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. [1] Additional types of specialized pens are used in specific types of applications and environments such as in artwork, electronics, digital scanning and spaceflight, and computing.
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A Wacom Bamboo Capture graphics tablet with supplied inductive pen. The crop marks on the surface indicate the active area, which measures 14.7×9.2 cm or 5.8×3.6 in. An active pen (also referred to as active stylus ) is an input device that includes electronic components and allows users to write directly onto the display of a computing ...
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