Color availability and sensitivity of ink to light are among concerns of ballpoint pen artists.

Touch and tablet screens are used on LCD displays as a substitute for the light pen, which can only work on CRTs.

GW-BASIC allowed use of joystick, mouse and light pen input devices of its time.

Optional features for the 3275 and 3277 were the selector-pen or light pen, ASCII rather than EBCDIC character set, an audible alarm, and a keylock for the keyboard.

In Falling Free and Shards of Honor there is mention of a light pen, a 1980s input device.

PDP-15 graphics terminal with light pen and Graphics tablet | digitizing tablet

A light pen could be used with the Type 30 to pick points on the display.

The programmed I / O bus would typically run low to medium-speed peripherals, such as printers, teletypes, paper tape punches and readers, while DMA was used for cathode ray tube screens with a light pen, analog-to-digital converters, digital-to-analog converters, tape drives, disk drives.

As the tip of the light pen makes contact with the screen, it sends a signal back to the computer containing the coordinates of the pixels at that point.

To detect the burrow, the suspected area is rubbed with ink from a fountain pen or a topical tetracycline solution, which glows under a special light.

The distinctive feature of SKETCHPAD was that it allowed the designer to interact with his computer graphically: the design can be fed into the computer by drawing on a CRT monitor with a light pen.

The rear featured a RGB monitor connector ( a standard 9-pin female D-shell compatible with CGA / EGA monitors ), an RCA-style composite video-out connector, a single RCA-style monophonic line-level audio connector, a light pen port, and an edge-card connector used to attach a parallel printer.

The back had all of the same ports as the Tandy 1000, except that the light pen port was replaced with an RS-232 serial port.

It used a 7. 16 MHz 8088-2 processor, had 384k of memory ( upgradeable to on the motherboard ), came with either one or two 5. 25 " internal floppy disk drives, had the light pen port ( not a serial port ) like the original Tandy 1000, and lacked the volume control and headphone jack of the TX ( also like the original 1000 ).

A light pen, also called a selector pen, is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's CRT display.

It was long thought that a light pen can work with any CRT-based display, but not with LCDs ( though Toshiba and Hitachi displayed a similar idea at the " Display 2006 " show in Japan ) and other display technologies.

However, in 2011 Fairlight Instruments released its Fairlight CMI-30A, which uses a 17 " LCD monitor with light pen control.

A light pen is fairly simple to implement.

Just like a light gun, a light pen works by sensing the sudden small change in brightness of a point on the screen when the electron gun refreshes that spot.

The enormous changes in world politics have, however, thrown it into confusion, so much so that it is safe to say that all international law is now in need of reexamination and clarification in light of the social conditions of the present era.

The voice is light in timbre, with a rough edge that corresponds to his visage.

It is because there is not only darkness but also light that our situation becomes inexplicable.

The portrait that had developed, fragmentarily but consistently, was the portrait of a man to whom serious thinking is alien enough that the making of a decision inhibits, when it does not forestall, any ability to review the decision in the light of new evidence.

Ptolemy's problem is to forecast where, against the inverted bowl of night, some particular light will be found at future times.

The distances of these points of light is a problem he cannot master, beyond crude conjectures as to the orderings of the planetary orbits viewed outward from earth.

Trevelyan centers too exclusively on Bright, is insufficiently appreciative of the views of Bright's opponents and critics, and makes light of the genuine difficulties faced by Peel.

The light at that time is a benediction.

In light of the scholarly reappraisals engendered by the higher criticism this is a most remarkable statement, particularly coming from one who was well known for his antifundamentalist views.

At the left is a pair of dressy straw pumps in a light, but crisp texture.

Far from being irrelevant to the ecumenical task, the Pontiff believes that a revivified Church is required in order that the whole world may see Catholicism in the best possible light.

These cases in which light is already visible at the other end of the tunnel are ones which over the next few years will absorb the bulk of our capital assistance.

A flashlight or electric lantern also should be available for those periods when a brighter light is needed.

At that time consideration will be given to whether in the light of the United States supplies of rice available for Title 1, disposal, India's production, consumption and stocks of food grains, other imports from the United States and countries friendly to the United States, India's storage capacity, and other related factors, any increase would be possible in the portion of the total rice programmed which is currently planned for procurement during the first year.

Essentially, the question presented for decision in the present Daytime Skywave proceeding is whether our decision ( in 1938-1939 ) to assign stations on the basis of daytime conditions from sunrise to sunset, is sound as a basis for AM allocations, or whether, in the light of later developments and new understanding, skywave transmission is of such significance during the hours immediately before sunset and after sunrise that this condition should be taken into account, and some stations required to afford protection to other stations during these hours.

It is a flavor that might take a little getting used to -- not because it is unpleasant, but because the flavor is hard to define in the light of our experience with other fruits.

It is a simple task to haul a boat fifty or one hundred miles to a lake or reservoir on the new, light, strong, easy-to-operate trailers which are built to accommodate almost any kind of small boat and retail from $100 to $2,000.

The Deerstalker points with the ease, speed and precision of a fine imported double shotgun, and its trigger pull is light and sharp.

Just after sunset is a good time to record the city lights in color since you get a `` fill-in '' light from the sky.

Tests have shown that such a device, with a fresh battery, will furnish light continuously for at least 10 days.

A skimming device at the effluent weir prevented loss of most of these light solids.

A device that converts signals from one type to another ( for example, a light signal in photons to a DC signal in amperes ) is a transducer, a transformer, or a sensor.

* Charge-coupled device, an electronic light sensor used in digital cameras

" From these principles and some additional constraints —( 1a ) a lower bound on the linear dimensions of any of the parts, ( 1b ) an upper bound on speed of propagation ( the velocity of light ), ( 2 ) discrete progress of the machine, and ( 3 ) deterministic behavior — he produces a theorem that " What can be calculated by a device satisfying principles I – IV is computable.

In optics, an equivalent device for the diode but with laser light would be the Optical isolator, also known as an Optical Diode, that allows light to only pass in one direction.

An electric light is a device that produces light by the flow of electric current.

In optics and photography, a device to remove, or to enhance, certain ranges of wavelengths ( colors ) of light.

" A deeply religious man, working in Counter Reformation Rome, Bernini used light as an important metaphorical device in the perception of his religious settings, often using hidden light sources that could intensify the focus of religious worship, or enhance the dramatic moment of a sculptural narrative.

* In Star Trek Online, players can use a Tipler Cylinder device which has a " dense beryllium cylinder core that rotates at near light speed, allowing your ship to perform a Temporal Backstep and rewind time approximately 13 seconds.

The window allows the memory contents of the chip to be erased, by exposure to strong ultraviolet light in an eraser device.

A laser is a device that emits light ( electromagnetic radiation ) through a process of optical amplification based on the stimulated emission of photons.

It is an electronically modulated optical device made up of any number of segments filled with liquid crystals and arrayed in front of a light source ( backlight ) or reflector to produce images in color or monochrome.

The Liquid Crystal Display is intrinsically a “ passive ” device, it is a simple light valve.

This induces the rotation of the polarization of the incident light, and the device appears gray.

However, CCFLs are less energy efficient then LEDs and require a somewhat costly inverter to convert whatever voltage the device uses ( usually 5 or 12v ) to the high voltage needed to light a CCFL.

In this state, the LC molecules do not reorient light, so the light polarized at the first polarizer is absorbed at the second polarizer, and the device loses transparency with increasing voltage.

In 1893, the standard metre was first measured with an interferometer by Albert A. Michelson, the inventor of the device and an advocate of using some particular wavelength of light as a standard of length.

Originally these included EPROM versions that have a " window " on the top of the device through which program memory can be erased by ultraviolet light, ready for reprogramming after a programming (" burn ") and test cycle.

A device which produces converging or diverging light rays due to refraction is known as a lens.